Bộ câu hỏi: Thì và sự phối thì (Phần 1) (Có đáp án)
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David will send me the complete report

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David will send me the complete report ______ .

after he had proofread it

when he was proofreading it

as soon as he has proofread it

as he proofread it

Giải thích

Chọn C