The work __________ as soon as possible.
A. has done
B. has been doing
C. should be done
D. is being done
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I think the dog__________ killed last night.
A. must have been
B. should be
C. ought to
D. had
The railway__________ now.
A. is built
B. being built
C. is building
D. is being built
It__________ about 20 years to build the pyramids.
A. has been taken
B. may have taken
C. has been taking
D. may take
The road__________ two years ago has been destroyed.
A. building
B. built
C. which built
D. was built