18.??It gets ______ when summer comes. A. warmer and warmer B. cooler and cooler C. hotter and hotter D. hot and hotter ...

10.??"I must be going now.""Oh, it's still early, _____ you stay a bit longer?" A. will B. wouldn't C. won't D. can ...

4.??I ______on the door for ten minutes now without an answer. A. was knocking B. am knocking C. knocking D. have been knocking ...

13.??Please return in an hour. I’ll be ready _____ then. A. till B. by C. at D. on ...

6.??"What has happened to Li Shen?" "I don't know. He____ the bus." A. can have missed B. may have missed C. might miss D. could miss ...

20.??"Why aren't you going swimming this afternoon?""Well, I didn't want to go alone, and no one _____ with me." A. went B. has gone C. had gone D. would go ...

15.??"What can I do for you?" "If you ______ see Mr. Li, tell him I've got his letter and I'll write to him soon. A. must B. may not C. won't D. should ...

9.??I am as poor as he, I mean I am ______ he is. A. not richer than B. no richer than C. not as rich as D. no more richer than ...

4.??He felt it rather hard to be _____ the opinion of the majority. A. with B. of C. in D. against ...

18.??广义上电子商务的标准英语是（ ） A. e-Business B. e-commerce C. e-mail D. e-Internet ...