—The light in his office is still on. Do you know _______?—To prepare for the material(材料) the meeting will need tomorrow, I think.
#36425
A
if he works hard
B
why he stays up so late
C
why is he so busy
D
when he will stop working
推荐题目
He doesn’t know_______.
#37740
A
to do what
B
to do how
C
what to do
D
how to do
--What did you say just now? --I asked you ______. 
#36948
A
why you wanted to become a nurse
B
how long had you stayed in the town
C
whether was there a bank near our school
D
when you will go shopping with me
— What did Tina say just now?— She asked ____ this summer holiday.
#79187
A
whether could you teach her dance
B
that whether you could teach her dance
C
if could you teach her dance
D
if you could teach her dance