Mr.Green often went to Japan to see his daughter by air.(同意句改写） Mr.Green ____ to ____to

题目

Mr.Green often went to Japan to see his daughter by air.(同意句改写） Mr.Green ____ to ____to
Japan to see his daughter.

答案

used,fly
used表示过去常常做某事
fly表示原句中的“坐飞机”