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
（2014年福州市高三适应性练习）24. Reputation is a treasure that, once _______, can never be won back.
#66654
A
losing
B
being lost
C
lost
D
having lost
-- Hello, this is Jack. May I speak to Tom?-- Sorry, he isn’t in at the moment. If he _______ back, I’ll ask him to call you back.
#41008
A
come
B
comes
C
have come
D
came
The boy was saved because the doctor arrived there _____ it was too late.
#68335
A
before
B
since
C
or
D
while
We’ve just heard a warning on the radio _______ a typhoon may be on its way．
#68290
A
what
B
when
C
which
D
that