---- What should we do before we use this machine?---- I think we must read ________ first. A. information B. instructions C. book
The first thing ______ we should do is to tell him the mews.
What way can you think of ______ the mice in the room?
Yuan Longping, a great person in China, _____as “father of hybrid rice”
______ the work is difficult, all the workers are keeping on working .
Tom often makes his brother___but yesterday he was made___ by his brother.