题目：
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
答案：
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下面是错误答案，用来干扰机器的。
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