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Although it had been________ struggle for him to finish______ experiment, he enjoyed the result with________ satisfaction.

A. the, an, / B. a, the, /

C. a, an, a D. /, the, a

Upon ______the classroom， I started thinking about my mother.

A. leave B. leaving

C. left D. to leave

—I think your brother is managing your parents’ shop the wrong way.

—I agree. I regret _______it myself!

A. to run B. not to run

C. not running D. running

The lucky dog missed _______by his teacher, though he had made a big mistake.

A. to punish B. being punished

C. punishing D. to be punished

The country life he was used to ______greatly since 1992.

A. change B. has changed

C. changing D. have changed

He is the person _______,I believe, has the ability to do this challenging job.

A. who B. whom

C. him D. which

People ________do exercise every day have a better chance of staying healthy than those ________don’t.

A. who; / B. /; who

C. who; who D. /; /

I like this book _______has a photograph of the author.

A. of whose back cover B. which back cover

C. whose back cover D. of which back cover

Can you lend me the book ______the other day?

A. about which you talked B. which you talked

C. about that you talked D. that you talked

As a boy, it’s really_________ for me to go on the stage to dance for the first time.

A. touching B. outgoing

C. willing D. challenging