题目内容

Why does NASA look for a funny scientist to join their planned mission to Mars?

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What does the author think about the relation between laugh and life?

If we had followed his plan, we could have done the job(good) with less money and(few) people.

If there were no examinations, we should have had a much (happy) time at school.

With the development of modern industry,(much) and (much) waste is produced.