_____ that the earth was flat?

（ ） when she started complaining.

If you don’t agree with me, （ ）.

What （ ） would happen if he told mom and dad what we had done?

The historical church was （ ） damaged in a fire attack on Dec.21, 2007.

I certainly didn’t appreciate （ ） when I made mistakes.

We don’t doubt _____ he can do a good job， concerning his experience.

Many students thought about the third question for quite a while and had great difficulty answering it. Obviously， it was _____ all.

Such a skilled tennis player knows how to take_____of his opponent’s (对手) chief weakness.

I have seldom seen my father _____ pleased with my progress as he is now.

I am looking forward to _____ from you as soon as possible.

（ ） you decide to take up, you should try to make it a success.