13.I know Mr. Brown; we ______ to each other at an international conference. A. are introduced B. are been introduced C. were introduced D. had been introduced ...
9.I don't know how far I didn't run. A. 我不知道跑了多远 B. 我不知道还有多远我没有跑。 ...
24.You didn't know enough people. You___join a club and make friends. A. can B. shall C. must D. may ...
11.——Do you know anything about the stock market——___ the name itself. Stock market is new in China. A. No more than B. Not more than C. No less than D. Not less than ...
4.The earliest international monetary system was know as the gold standard. A. 错误 B. 正确 ...
18.As we know, the sooner coastal populations are____a coming tsunami, the greater their chances of escaping. A. used to B. informed with C. warned of D. known about ...
13.Don’t ___ to let me know if there is anything I can do for you. A. reject B. prevent C. hesitate D. refuse ...
7.--- I don’t know Why he is late. --- Nor do I. he _____ an accident. A. could have had B. should have had C. might have had D. must have had ...
19.Do you know the man _______ A. whom I spoke B. to who spoke C. I spoke to D. that I spoke ...
(单选题)3: Do you know whether he is on holiday or ( )? A: in business B: on business C: to work ...