He studies so hard to avoid （ ） at the bottom of the class.

You needn’t introduce him to me. I’ve met him on several _____.

Her （ ） to the job left her with very little free time．

（ ） has already been pointed out before, English grammar is not a set of dead rules.

The film （ ） him of what he had seen in China.

I love thinking of new designs. It keeps my mind clear and active and fills my retired life with （ ）.

It’s vital that enough money_____collected to get the project started.

I have two children but （ ） of them likes fruits.

Scientists say it may be five or six years （ ） this medicine is tested on human beings.

Most Chinese like tea, but some prefer coffee _____tea.

I won’t call you, （ ） something unexpected happens.

When I saw the expression on his face, I realized he is （ ） agreement with me.