-- 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
推荐题目
We’ll have to finish the work, ____. 
#69414
A
no matter how long does it take
B
it takes however long
C
however long it takes
D
however it takes long
It was at the shopping center ______ Mary and I had an appointment ______ I lost my necklace.
#70244
A
where;that
B
when;that
C
where;when
D
that;where