—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
推荐题目
 Betty is going to London. But I don’t know ________. 
#37043
A
when she sets off
B
when does she set off
C
when she will set off
D
when will she set off
Mr. King didn’t know __________ yesterday evening.
#79195
A
when does his son came home
B
when his son comes home
C
when his son came home
D
when did his son come home
The children in poor areas can’t afford their education. We should think ________ to help them. 
#37979
A
what can we do
B
what we can do
C
how can we do
D
how we can do