What troubled the teacher was that no one present made an answer when asked who had broken the glasses, so he didn’t know who .
You must follow the directions exactly, and if you should become you must take the time to back again and read them over.
--- Was he sorry for what he had done? --- ___________.
.--- Excuse me. Is this the right way to the Summer Palace? --- Sorry, I am not sure, but it _____ be .
_________ the meeting room, he found all the parents already ________ there.
The construction of a 5-million-ton iron and steel works is now under__________.