用风扫线后，终端见风后，应（）.
A、停风
B、关收入阀
C、将风转入下水井
D、继续吹扫3--5分钟后再停
参考答案：D
I found ________ hard to finish the work in such a short time. [ ]
A. him
B. it
C. that
D. me
