--Did Mary return late last night?--No. It was not yet 7 o’clock _________ she arrived home.
Choosing the right dictionary depends on ________you want to use it for. (2007江苏)
The difficulty we now meet with is ___________ we can persuade him to tell the truth.
It was really very dangerous; you ____ him seriously if I didn’t stop you.
—What do you think of the hotel here? —Oh, wonderful! We ____ a better one than this.
We are all looking forward ______ the Great Wall during the National Day.