英语：three and four-------（ be ）seven who ---------(fly) kites at the weekend? They do.

题目

英语：three and four-------（ be ）seven who ---------(fly) kites at the weekend? They do.
是两个小问题。。who和seven分开的

答案

three and four （ is ）seven.
who (flies ) kites at the weekend? They do.
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