I get _______email from my teacher every week.
Scientists are trying their best to_______ ways to treat the terrible disease caused by Ebola(埃博拉).
Now it’s time to have a rest. You’d better _______.
Could you tell me a meeting in Guangzhou next week?
Every day, too much water _______ in our school. We should save it.
Dick______ in America, but he has been ______ Chinese food since he moved to China.