The restaurant ________ to my brother was sold last month.
A. belong
B. belonged
C. belonging
D. was belonged
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I just heard the bank where Dora works was robbed by a gunman ________ a mask.
A. wore
B. worn
C. wearing
D. wears
He is a student at Oxford University________ for a degree in computer science.
A. studied
B. studying
C. to study
D. to be studying
Listen! Can you hear the opera________ somewhere near here?
A. singing
B. being sung
C. sung
D. to be sung
At present, there are thousands of people ________around the clock to fight against the flood.
A. are working
B. worked
C. working
D. to work