— 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
When exposed to stress, in ________ form, all of us react both chemically and physically.
#69251
A
whichever
B
whatever
C
however
D
whenever
______was known to all,William had broken his promise ______ he would give us a rise.
#72479
A
As;which
B
As;that
C
It;that
D
It;which
After Yang Liwei succeeded in circling the earth ,_______our astronauts desire to do is walk in space .
#73019
A
where
B
what
C
that
D
How