用括号中的词的适当形式填空!1.I'm ______ my teeth.(brush)2.How many ______are there in your class?(

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用括号中的词的适当形式填空!1.I'm ______ my teeth.(brush)2.How many ______are there in your class?(

用括号中的词的适当形式填空!1.I'm ______ my teeth.(brush)2.How many ______are there in your class?(
用括号中的词的适当形式填空!1.I'm ______ my teeth.(brush)2.How many ______are there in your class?(

用括号中的词的适当形式填空!1.I'm ______ my teeth.(brush)2.How many ______are there in your class?(
1.brushing
2.students