The Greens _____ China for seven years.

Would you like to go out to play football with me— ______ But I should do my homework first.

31. The decision ______ Internet addiction（成瘾）as a mental disorder has caused much debate.

I am afraid he’s more of a talker than a doer, which is ________ he never finishes anything.(2011·山东)

This means that for the first time doctors may be able to tell if an infected（被感染的）person who feels well is ________ becoming ill, so that they can try to do something to prevent this