save on:  We don’t turn an a light if we don’t need it to save on electricity. (To not use something so as to avoid paying for it)
save up: We are trying to save up for our overseas holiday. (To set aside money for future use)
scare away:  A supposedly haunted scene near my house scared many people away from the place. (To frighten someone away)
scare away:  The farmer set up big scarecrows to scare birds away. (To keep something away by frightening them)

scare into:  The cult leader scared the members into following his instructions. (To frighten or threaten someone into doing something) 

scare off:  The new tax scares off many would-be investors. (To make someone feel less confident or sure about doing something)
scare up:  We have to scare up something to eat the night before someone come to our rescue. (To obtain something in spite of difficulties)

scrape along:  With my first job, I had to scrape along on my small weekly wage. (To earn just enough money to live on)

scrape by: She lost her husband, so the family had to scrape by on her meager earnings.  (To get by)
scrape in: He scraped in by a slim majority to become president of the club. (To just make it)
scrape through:  I just scraped through my exams.  (To just pass or achieve something)
scrape up:  She scraped up enough money to pay off her father’s gambling debts. (To bring together with difficulty a number or quantity of something)

see about:  One of us has to see about getting enough drinks for the party. (To deal with)

see about:  Let the doctor see about the pain on your leg instead of just worrying about it. (To attend to)

see after:  He asked me to see after his hamsters while he is overseas. (To take care of)

see in:  The movie was supposed to be funny, but I couldn’t see the humour in it. (To see a quality in something) 

see in:  We can see an outgoing personality in him. (To see a quality in someone)
see in:  Her parents couldn’t understand what she saw in him. (To see something in someone)

see of:  We have seen very little of each other since her transfer to the headquarters in the city.(To spend time socially together with someone) 

see off:  He was very happy see his mother-in-law off at the airport. (To bid someone farewell at a particular place such as airport, railway station, etc)

see off:  His job is to see off unwelcome intruders. (To send an uninvited person away)

see out: There were no one to see us out when we left the office. (To accompany a guest to the door when he/she is leaving)

see out:  We saw out the entire firework display in spite of the light drizzle. (To remain until the end of an event, etc)

see through:  They are determined to see the whole project through. (To get on with a task until it is completed)

see through:  I need some money to see me through until I get another job. (To support someone through a difficult time)
see through:  We saw through his cunning act almost immediately. (To realize the truth of something that is deceiving)

see to: When I was staying with them, her parents saw to all my needs. (To attend to)

see to: The local council intends to see to it that no one gets away with littering the beach with bottles and cans. (To deal with)

sell off:  I had to sell off my antique furniture to pay for my medical treatment. (To raise money to meet one’s need)

sell off:  He sold off his luxury yacht to the highest bidder. (To sell something at a reduced price)

sell out:  They have sold out of all the units of the new computer model. (To sell one’s supply of goods or materials)

sell out:  The latest batch of the book is completely sold out. (To sell an entire stock of something)
sell out:  Fellow gang members had sold him out. (To betray someone)
sell out:  He sold out to the other side. (To abandon one’s principles)

sell up:  The family sold up and settled permanently in another country. (To sell all of one’s possessions)

send away:  She was sent away to live with her grandparents in her early teens. (To send someone to another place) 

send back:  The letter was delivered to a wrong address and was sent back tothe post office. (To return to the sender) 

send down:  He was not sent down as he was found innocent of the crime. (To imprison someone)   

send down:  The two students were sent down from their university for unacceptable behavior. (To expel)

send for:  Someone has already sent for an ambulance for the accident victim. (To request to come)

send for:  She sent for a free sample of the shampoo as advertised. (To request or order by post) 

send in:  When negotiation with the hostage-takers failed, the police sent in the snipers. (To involve someone in a difficult situation)

send off:  He was sent off for kicking another player’s backside. (To compel someone, especially a player to leave the field for violation of the rules)

send off:  We sent off a letter of application and are still waiting for a reply. (To cause something to be delivered by post)
send off:  The mother sends the kids off to school each morning. (To move someone to another place)

send on:  The report is sent on to the Attorney General for further action. (To deliver something to someone so that they can deal with it)  

serve out:  He was released without having to serve out the full sentence because of good behavior. (To spend a period in prison)

serve out:  She served out the homemade apple pie. (To present food or drink to each of the people or guests present)