The World Health Organization has given some advice on________to protect us from being infected(感染)with H7N9.
--- Don’t forget to come to my birthday party tomorrow! --- . A. I don’t B. I won’t C. I can’t
Listen, a small number of students in the classroom. A. talk B. are talking C. is talking
your father usually go to work by car? A. Do B. Is C. Does
-- are you staying in the countryside?---For more than one week. A. How often B. How long C. How much
---What’s the matter? --- I have . A. an apple B. a sore back C. many friends