—Excuse me, could you tell me____?—Yes. Go strainght and turn left. It’s on your right.
They volunteer________at the local hospital.
That boy looks very unhappy.Let’s________.
His sister usually helps him________his homework.
—Your tea smells great! —It’s from India.Would you like________?
The World Health Organization has given some advice on________to protect us from being infected(感染)with H7N9.