How could he get the plan _____ without any one to support him?

  　A. to carry out              B. carry out

  　C. carrying out              D. carried out

There are five pairs, but I'm at a loss which _____ to buy.?

　　A. to be chosen   B. to choose from?  C. to choose   D. for choosing

—The police have caught the murderer.

　　   —Yes, and he admitted ________ his boss on a rainy night seven years ago.

　　A. to kill                     B. to have killed           C. having killed     D. have been killing

When people move to another country, they often try ________ the customs of their native land.

　　A. to keep on　　　B. to keep off     C. to keep up　　　D. keeping up

All of us need ______.

　 A. to feel needed and admired 　      B. feeling needed and admired

　 C. to feel being needed and admired 　 D. to feel needing and admiring