Why ____ you keep troubling your mother with such question while he is busy .
18. Don’t try to cheat the taxman(税务人员); you’ll never ______it.
10. Sometimes I really wonder how I could make friends with a man who has so little ______ with me.
. Doing morning exercises ____ our health and we _____ it.
5. -----Could I borrow your dictionary? ------Yes, of course you______.
4. To make members of a team perform better, the trainer first of all has to know their ____ and weaknesses.