Why are you lying in bed? —— A __________ walk __________ me completely tired．

I feel so nervous before the exam that I can’t sleep well at night. — I think having a holiday will_______ help you relax.

This robot is supposed to save a lot of labor, but it remains a problem if it ______.

Neither my wife nor I myself______ able to persuade my daughter to change her______.

The letter _____ I received from him yesterday is very important. [ ]