—How’s your tour around the North Lake? Is it beautiful?—It ________ be, but it is now heavily polluted.
Thinking that the students were having an evening class, the teacher left the classroom, _____.
Mr Williams, ______ of the long speech, sat there, ________ to death.
The PLA soldiers came to the ruins of Yushu and after ______ seemed to be a long time, they helped some victims out.
Everyone has a responsibility to save _____ water, if future generations are to enjoy a similar standard of living to _____ we enjoy now.
---________, but the noise is really disturbing. I can’t sleep. --- I’m sorry. I didn’t know you would mind.