You must be tired. Why not _______ a rest

I was just about to leave home the telephone rang.[ ]

sig Chinese kung fu can not only ________ one’s strength, but also develop one’s character.

Has Mr lee arrived? —No, but it is already 9 o’clock. He should ____at any time.

Every necessary means____ to protect milu deer which____ very valuable to us. As a result, the number of milu deer is increasing. [ ]