There are ______ books in the reading room. [ ]A. hundred ofB. hundreds ofC.

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There are ______ books in the reading room. [ ]
A. hundred of
B. hundreds of
C. two hundreds
D. two hundred of

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举一反三

There are about two students in the newly built school.[ ]
A. thousand
B. thousands
C. thousand of
D. thousands of

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-Excuse me, could you tell me where the nearest post office is?
-The nearest post office? You will have to walk ____. [ ]
A. 500 metres away
B. 500 metre far
C. 500 metres farther
D. 500-metre far

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More than two _______ years ago, people knew little about the universe. [ ]
A. thousands
B. thousand
C. thousand of
D. thousands of

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用合适的词填空。1 ________ + three = nine
2 four - ________ = two
3 eight + one = _________
4 six - ______ = seven
5 six + _______= seven
6 four + four = _______
7 one + ______ = one
8 five + one = ________
9 _______ - three = four
10 two + _______ = six

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用所给词的适当形式填空。1. Tom has _______(12) color pens.
2. Tom"s birthday is August ________(12).
3. Is March the _______(3) month of a year?
4. There are ________(90) students in her class.
5. The new skirt are ________(100) yuan.

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