—Mum, can we go to the art museum tomorrow?—Sure. But first we should find out ________.
#39005
A
what can we do
B
where we can go
C
how can we go there
D
if it will be open
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I doubt _______ he will win or not.
#79087
A
whether
B
if
C
that
D
when
 I don’t know _____ yesterday.
#37649
A
when he will leave
B
when will he leave
C
when he left
D
when did he leave
— I don't know_   .— You can go and ask Jack.
#39018
A
when does the train leave
B
that we will plant trees or not
C
if she had come yesterday
D
what I should buy for him