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
— Has Li Hong gone to the library? — Pardon? — I asked       the library.
#39304
A
if Li Hong had gone to
B
if had Li Hong gone to
C
Li Hong had gone to
D
has Li Hong gone to
I asked my lawyer      say in court . 
#79237
A
what I should
B
what should I
C
how I should
D
how should I
 John said that he________ if you ______ help him. I will if I have time.
#37362
A
wonders, can
B
knows, could
C
wondered, could
D
knew, can