问题:
They are planning ________ this project next month.
A.when will we start
B.when to start
C.when are we going to start
D.when we began
They are planning ________ this project next month.
A.when will we start
B.when to start
C.when are we going to start
D.when we began
A.when will we start
B.when to start
C.when are we going to start
D.when we began
参考答案: