1.The audience wondered why the professor had not____yet.

1.The audience wondered why the professor had not____yet.
A.looked up B.taken up C.turned up D.made up
2.-Does the new teaching method work?
-Yes.The students find it easy to_____what is being taught.
A.take off B.take up C.take in D.take on
3.We have_____all the sites,but still can't find the essay.
A.looked through B.looked for C.looked after D.looked out
4.Considering your salary,you should______at least100dollars a week.
A.put up B.put forward C.put aside D.put out
5.He assidentally____he had quarreled with his wife and that he hadn't been home for a couple for days.
A.let out B.took care C.made sure D.made out