The suggestion _______ Tom gave me about how to study English at the meeting was that we ______ as much as possible.

There is no need_____，because the flight has beencancelled．

It____ outside. You’d better take an umorella with you.

This is the reason ______ she explained in the reportfor her success in the job

The math problem was _________ difficult __________ none of us worked it out.