It all depends on _____ you can support us. 
#37447
A
if
B
whether
C
that
D
what
推荐题目
 ---Who can tell me_______?   ---Every 15 minutes.
#36448
A
when the bus will arrive.
B
how often the bus arrives
C
how long has the bus been away
D
when will the bus arrive
--- I can’t find Lily. Where is she? --- Sorry, I don’t know_____________.
#38657
A
where has she been
B
where she has been
C
where has she gone
D
where she has gone