We spent two years and a half ________ that factory.
A. built
B. building
C. to build
D. build
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Mother came into the room, ________her children.
A. followed by
B. to be followed by
C. having followed
D. being followed
Don’t stop here. Go on ________ until you reach the end line.
A. to run
B. run
C. runing
D. running
The books ________ to the library are put back on the shelves immediately.
A. returning
B. returned
C. which returned
D. having returned
________in the leg, the soldier was sent to hospital at once.
A. Seriously injured
B. To be injured
C. Being injured badly
D. Having injured
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