Some students even have no idea of          they are studying, so they waste much time playing.
#79028
A
what
B
when
C
why
D
where
推荐题目
—Excuse me, could you tell me________ ?— Wait a moment. It is coming in ten minutes.
#38274
A
where the next train will arrive
B
if the next train will arrive
C
how soon the next train will arrive
D
how often the next train will arrive
—Do you know __________ in China tomorrow?—In the morning.
#36665
A
when she arrives
B
when does she arrive
C
when she will arrive
D
when will she arrive