She _____________ on her computer for more than two hours when she decided to stop for a rest.
A. has worked
B. has been working
C. was working
D. had been working
Trả lời
Chọn D
She _____________ on her computer for more than two hours when she decided to stop for a rest.
A. has worked
B. has been working
C. was working
D. had been working
Chọn D
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