______ regular exercise is very important, it’s not a good idea to exercise too close to bedtime.
— Where is Jenny?— She is doing her homework ______ the classroom.
Mike lost his key. ______ couldn’t enter the room.
I met Jerry in the hotel yesterday, but he didn’t tell me________.
We don’t believe he will come here on time, ________?
A new bridge from Zhongshan to Macao in five years.