— 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
David suddenly realized that the waiter was the same man _____ face he had seen in a painting many years ago．
#69754
A
which
B
that
C
of whom
D
whose
Was it through Mary , ____ was working at a high school , _____ you get to know Tom ?
#71897
A
who, who
B
that, which
C
who, that
D
who, which
There must have been something wrong with the society _______ no one offers to help those who are in trouble.
#68767
A
when
B
where
C
which
D
that
–The plane is due to take off at 7:50 from the airport.–________ we fail to arrive there in time. –Try to take another flight then.
#69435
A
What if
B
As if
C
Even if
D
Only if
Why not try your luck downtown, Bob? That’s ______ the best jobs are.
#73023
A
what
B
where
C
when
D
why