30．When you finish your work, don’t forget to put the tools back where they ________．
#103889
A
are
B
will be
C
were
D
had been
推荐题目
Our food supply _____. We’d better get some in case there’s ____ left.
#101949
A
is running out, none
B
has run out of, none
C
is using up, nothing
D
has used up, nothing
— Isn’t it hard to drive downtown to work? —Yeah, that’s why I ______ to work by train.
#101418
A
have gone
B
have been going
C
was going
D
will have gone
The manager was concerned to hear that two of his trusted workers _____.
#101325
A
are leaving
B
have left
C
were leaving
D
will leave
—Does Li Ping serve in the army?—No, but he ________ in the army for five years.
#104477
A
served
B
has served
C
is serving
D
would serve