My sister isn’t in. ________ she comes back, I’ll let her call you back.
#41346
A
While
B
Until
C
Before
D
When
推荐题目
The new movie __ to be one of the biggest money-makers of all time
#67870
A
promises
B
proposes
C
preserves
D
provides
you may have , you should gather your courage to face the challenge .
#67965
A
However serious a problem
B
Whatever serious a problem
C
However a serious problem
D
No matter how a serious problem
______ halfway through the exercise, the teacher changed his mind and collected all our papers.
#70292
A
When only being
B
When we were only
C
Being only
D
Having been
The news came as quite a shock to us _____ a ship with 82 passengers on board sank near the north coast.
#68338
A
what
B
that
C
when
D
where
— 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