Guangzhou is in the ________ of China.
—Doctor, ____________should I take this medicine? —Twice a day. A. what time B. how much C. how often
Chinese people complain that the price of the apartment is getting_____________. A. lower and lower B. higher and higher C. cheaper and cheaper
You won’t feel happy at school___________ you get on well with your classmates. A. though B. unless C. because
—How do you communicate with your foreign friends? —________________writing e-mails, of course. A. With B. By C. From
Nowadays, ___________of business letters are written in English. A. two third B. two thirds C. two three