Tổng hợp đề thi thử tiếng anh thpt quốc gia (Đề số 30)

She _____________ on her computer for more than two hours when she decided

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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

She _____________ on her computer for more than two hours when she decided to stop for a rest.

has worked

has been working

was working

had been working

Giải thích

Chọn D