Sorry I’m late. I ______ have turned off the alarm clock and gone back to sleep again.

  A. might                   B. should                      C. can                          D. will

Charles Babbage is generally considered _______    the first computer.

              A. to invent            B. inventing           C. to have invented   D. having invented

I saw him __ there, __ his clothes and jump into the river.

  A. stand; take off   B. standing; take off   C. standing; taking off   D. standing; took off

-Oh, it's already a quarter past six. What shall we do at the meeting this evening?

-We'll go on with the matter________ this afternoon.

A. be discussed      B. being discussing       C. discussed   D. which discussed

My work_______, I went home .

　　A.had been done           B.done          C.having done              D.to be done

 “Would you be ______ help me?”     “I'd very much like to.”

  A. kind enough         B. so kind to              C. so kind as to             D. as kind as to

.He walked down the hills, _______ softly to himself.

　A. sing　　               B. singing　　           C. sung　　                     D. to sing

The scientists were waiting to see the problem _______.

　A. settle　　　               B. settled　　　           C. to settle　                     D. settling

.I fell down and broke three of my teeth. I wonder how many times I have to come here and get my false teeth _______.　

　A. fix　　　        B. fixing　　　               C. fixed　　　          D. to fix

The next morning people found the outside world completely ___.            

A. change         B. changed     C. changing    D. having changed