Mr.Smith is always on time for everything.How ____ it be that he was late for the important meeting?
The young man in Liaoning decided to go round China ___ bike.
Machines made today are much better than __ of 1950s.A. that B, those C. the ones D. which
___ my advice, and it will do you a lot of good.
You needn’t worry about it.He ___ be telling the truth.
The three were moved out to a nearby hotel, to make ___ for more important persons.