I it"s necessary for us to have a good studying habit. [ ]A.

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I         it"s necessary for us to have a good studying habit.        [     ]
A. to believe
B. believe
C. believing
D. believes

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举一反三

—What do you         _ this book?
—It"s useful to us.    [     ]
A. think of
B. think about
C. ask about
D. want

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用所给词的正确形式填空。1. I            (think) good friends should help each other.
2. My father is             (athletic) than my uncle.
3. There are so many           (different)  between the two dictionaries.
4. My little brother is a shy boy.  He is         _(quiet) than me.
5. Would you like             (go) to the movies with me tonight?

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We"re _____ an English lesson.[ ]
A. having
B. going
C. playing
D. making

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What did you        your vacations?    [     ]
A. think
B. think of
C. thought
D. thought of

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用方框内动词的适当形式填空.

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