We can't go into the meeting room because the sign says “ ”.
A. Hurry up B. Be quiet
C. Don't entry D. Pay attention to it
The traffic signs warn people after drinking.
A. to drive B. not to drive
C. driving D. don’t drive
--- Michael, could you tell me ?
--- I'd like to join the dancing club.
A. why you like the dancing club B. which club you're going to join
C. whether there are any clubs in your school D. which club are you going to join
（题文）（2017·广东·28）Two months ago，China tested its ________ aircraft carrier(航空母舰） built completely on its own.
A. one B. first C. the one D. the first
Do you know we can get there at 3:00 this afternoon.
A. as B. since C. whether D. when
Mr. Black is going to give much money to the poor, he isn't rich enough.
A. if B. unless C. until D. though
