— No one can answer the question _______ we can complete the task in time, do you know? — Yes, and this is because we don’t know the way _______ the scientist used last time．
#69635
A
whether; which
B
if; which
C
whether; in which
D
if; in which
推荐题目
John couldn’t finish his words ______ something had struck his throat.
#72477
A
though
B
as though
C
when
D
since
Which of the two computer games did you prefer?—Actually I didn’t like ______.
#71762
A
both of them
B
either of them
C
none of them
D
neither of them
—Jerry, coffee or black tea? —I don’t mind. I will like you’re making, Jenny.
#67373
A
what
B
whatever
C
however
D
which