The young men all shouted “Happy New Year” _______it was twelve o’clock.
句意：一到十二点钟，年轻人就都喊“新年快乐”。
考查连词辨析。after在……之后；as soon as一……就……；if如果。根据句意可知，在十二点钟的时候，年轻人都紧接着喊出了“新年快乐”，即从句的动作一发生，主句的动作紧接着发生，所以用“一……就……”as soon as引导时间状语从句。故选B。
The young men all shouted “Happy New Year” _______it was twelve o’clock.
You’d better tidy up your room ________ your father comes back.
A break between classes is very important for students because it ________helps with students' health by doing sports _______improves their social skills by communicating with their classmates.
You'd better make a good plan you take a holiday.
Cooking is an interesting lesson and we can make different dishes ________ we like.
—Would you like to play table tennis with me this afternoon?
—I'd like to. ________ I'm afraid I have no time.
Susan ________Tina are good friends.
Miss Zhao is very helpful. She often helps us ____we are in trouble.
He was so tired that he fell asleep ___he went to bed.
—Which book do you prefer, Harry Potter or Treasure Island?
—Harry Potter, of course, ____I ___ my sister likes it.
