问题描述：
用所给单词的正确形式填空1.These sheep __(be) white.2.These___(be) a pen and twopencils in the box 4.Are those ___(mouse) in the picture?
6.Jim spent three years ___(learn) Chinese before he came to China .
7_____(hundred) of people took part in the party last night.
6.Jim spent three years ___(learn) Chinese before he came to China .
7_____(hundred) of people took part in the party last night.
问题解答：
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