27.After reading the report from the factory, they went on ________ how to deal with the problem. A. discussing B. with discussing C. to discuss D. discuss 答案是:C 根据句意(继续做另一件事)。
30.Your room needs________; would you like me________ it for you? A. to be cleaned; do B. cleaning; to do C. being cleaned; do D. cleaned; to do 答案是:B need to be done等于说need doing,但要说Would you like sb. to do sth.?
31.Every summer, she went to the beach where she goes ________ every day. A. to swinmming B. swim C. swimming D. for swimming 答案是:C go swimming意为“去游泳”。
32.Henry suggested ________ the hospitals before ________ the police to look for him. A. telephone; asking B. to telephone; asking C. telephoning; asking D. telephoning; to ask 答案是:C suggest后接动词-ing,before用作介词也要后接动词-ing
15. Three-fourths of the surface of the earth ________ sea. A. is B. are C. is of D. has 答案是:A 表示“百分之多少……,几分之几……”作主语时,单复数取决于of后面的名词。本题of之后the surface是单数,选A。