wild geese change homes twice a year.(划twice和twice a year,划线提问)题目看补充
（ ）( )（ ）a year（ ）wild geese change homes?
（ ）( )（ ）wild geese change homes?
人气：160 ℃ 时间：2020-04-01 16:41:26
解答
(How) (many) (times) a year (do) wild geese change homes?
(How) (often) do wild geese change homes?
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