The enemy troop could hardly make any advance, and ________ could they fall back.
The way you thought of _______ the math problem is greatly creative .
The picture of advertisement was well taken while its ______was badly written.
With the rapid development of the Internet, _______ communication is done by regular mail.
The child should be punished. You shouldn’t let him _____ telling lies.
So amused _______ that I couldn’t help laughing when I saw the children dressed up as Santa Clauses on Christmas Day.