【推荐1】—What time will David get to Shanghai?
—I’m not sure. When he ________, I’ll call you.

A．will arrive

B．arrived

C．is arriving

D．arrives

【推荐2】He just wants to know if she ________ him when she ________ back.

A．calls; comes	B．calls; will come
C．will call; will come	D．will call; comes

【推荐3】—Is there anything we should pay special attention to during the coming final exam?
—Of course. Students should remain in their seats until all the papers ________.

A．are collected	B．will be collected
C．collect	D．will collect