Before joining the Department of Defense, Mr． Panetta _______ as director of the CIA from February 2009 to June 2011．
#101823
A
would serve
B
served
C
was served
D
had been served
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—We want to sit at the table near the window.—I’m sorry，but it________ already.
#101960
A
has taken
B
took
C
was taken
D
has been taken
I decided to go to the library as soon as I ______.
#104128
A
finished what I was doing
B
finished what I did
C
would finish what I was doing
D
finish what I did
I had been working on math for the whole afternoon and the numbers before my eyes.
#102156
A
swim
B
swum
C
swam
D
had swum
The corn powder with two other things _______ water to make all kinds of good.
#103654
A
are mixed with
B
is mixed with
C
are mixed by
D
is mixed by