题目内容
句型转换。
The boy has been to the U.S.A.twice.(对画线部分提问)
How ________ ________ has the boy been to the U.S.A.?
答案:many,times
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题目内容
句型转换。
The boy has been to the U.S.A.twice.(对画线部分提问)
How ________ ________ has the boy been to the U.S.A.?