题目内容
句型转换
He's gone to the USA. （改为一般疑问句）
________ he ________ to the USA?
He's gone to the USA．(改为一般疑问句)
He's been skating for five hours．(就画线部分提问)
________ ________ ________ he been skating?
He's done that already．(改为否定句)
He ________ that ________．
He's just come back from Tokyo, ________ ________?
