题目内容
It is when the plane that you’d better find out at the book office.
| A.will take off | B.is going to take off |
| C.is taking off | D.takes off |
D
略
练习册系列答案
相关题目
题目内容
| A.will take off | B.is going to take off |
| C.is taking off | D.takes off |