When the clock_________ twelve, all the lights went out.
#100872
A
hit
B
beat
C
struck
D
knocked
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--- Why does the lake smell terrible?--- Because large quantities of water _________.
#101273
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
It’s nice to see you again. What _____ since we last met?
#103399
A
have you done
B
had you done
C
have you been doing
D
did you do
—Peter！Let's hurry.The boss is coming.—Oh，I was afraid that we ________ her.
#99721
A
miss
B
had missed
C
will miss
D
have missed
It __________ Tom that parked the car here, as he is the only one with a car.
#101531
A
may be
B
might have been
C
must have been
D
could be