问题
The World Health Organization has given some advice onto protect us from being infected(感染） with H7N9.
A:how
B:what
C:where
D:when
B:what
C:where
D:when
正确答案是：
同类题型
_____________ will the students be back from Qufu?-In about half an hour，I think. [ ]
students took part in our school sports meeting last week.
I _________ my mum cook dinner in the kitchen when the telephone ______.
What do you think of tomorrow’s football match?—_____difficult for us_____ the match.