If I am not __________ when you phone, ask for someone else’s help.

Jack coughed day and night, so the doctor______him to take the medicine three times a day.

 John began to feel little beads of sweat going down the back of his neck. His words seemed to have had no visible _______ on the man. 

(2013·新课标全国卷Ⅱ)Would you like to ________ with us to the film tonight?

If you want to know whether you are fit to learn history and geography, you’d better _________ your head teacher.