________in the qucue for half an hour ,the old man auddenly realized he had left the cheque in the car.
#97767
A
Waiting
B
To wait
C
Having waited
D
To have waited
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The room is empty except for a bookshelf _____ in one corner.
#91128
A
standing
B
to stand
C
stands
D
stood
I have a lot of readings _____ before the end of this term.
#97564
A
completing
B
to complete
C
completed
D
being completed