Which do you enjoy ________ your spare time, playing cards at home or taking a walk in the park?

  A. spending        B. to have spent     C. being spent        D. to spend

Scientists generally agree that the Earth’s climate will warm up over the next 50 to 100 years _______ it has warmed in the 20,000 years since the Ice Age.

  A. as long as      B. as much as         C. as far as            D. as well as

Not far from the club there was a garden, _________ owner seated in it playing bridge with his children every afternoon.

  A. whose           B. which               C. where               D. its

The professor has written another book, ________ of great importance to computer science.

  A. which I think it is                       B. I think it is

  C. which I think is                          D. I think is

_______ you can think of someone who deserves an apology from you, someone you have wronged or judged too roughly, do something about it right now.

  A. Although                            B. If                            C. In order that                                   D. Before

Mr. Wang made up his mind to devote all he could ____________ his oral English before going abroad.

  A. improve        B. to improve        C. improving         D. to improving

The shop manager always says to his assistants, “We can never be _______ polite to our customers.”

  A. so                 B. enough              C. too                   D. more

 ---- Do you have any idea what Tom did yesterday afternoon?

---- I know he spent at least as much time playing football as he __________.

  A. did writing               B. wrote                C. spent to write                 D. was writing

I don’t think it any good ______________ too many sweets.

  A. to eat            B. eating               C. eaten                 D. to have eaten

 Their house caught _________ fire and was soon burnt to ___________ ground.

  A. a, a               B. a, /                   C. the, /                 D. /, the