Experts believe     people can waste less food by shopping only when it is necessary. 
#78980
A
why
B
where
C
that
D
what
推荐题目
–Do you know________ , Mike ?  --On May 12th , 2008 .
#39264
A
when the earthquake took place in Wenchuan
B
when the earthquake has taken place in Wenchuan
C
when did the earthquake take place in Wenchuan
D
when the earthquake will take place in Wenchuan
 —I don’t know ______. Can you tell me?  —Yes, at 3 tomorrow afternoon.
#37767
A
when we had a meeting
B
when did we have a meeting
C
when we will have a meeting
D
when will we have a meeting
I’m interested in _________the book is worth reading.
#37523
A
if
B
if or not
C
either of not
D
Whether
The policeman asked the small girl __________
#39132
A
why she was crying
B
why was she crying
C
why she is crying
D
why is she crying