They had a fiy last week 改爲一般疑問句

題目：

They had a fiy last week 改爲一般疑問句

解答：

Did they have a fly last week?
不明白的再問喲,請及時採納,多謝!
再問： The children had a good time in the park 改爲一般疑問句
再答： Did the children have a good time in the park?
再問： There were about nine hundred people at the concert