—This physics problem is too difficult. Can you show me _______, George?—Sure.
The fat boy always worries about _______ enough food _______ every day. How funny!
Why not ______ your teacher for advice when you don’t know ______ the problems?
Few men________ shopping with their wives ________ at home to watch TV.
There’re too many clothes in the shop. I really can’t decide .
After all of us finished our homework, the teacher told us _________at once.