题目内容

If you____________ to know what you don’t know, you’ll only make a fool of yourself.

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Working with ExpressionsFill in each of the blanks in the following sentences with a suitable preposition or adverb.We should judge people what they do, not what they say.

If no one helps him he may end ______ being a beggar.

We highly recommend that you sign up ______ this course.

I thanked him for the offer but turned it ______.