They started doing this research seven months ago. they have...... câu này làm sao vậy ạ

2 câu trả lời

Đáp án : They have done this research for seven months

` - ` S + started / began + V-ing / to V + 1 khoảng thời gian + ago

` = `S + have / has + ` V3 `+ for + 1 khoảng thời gian

They started doing this research seven months ago

->They have done this research for seven months

Cấu trúc:S + have/ has + VpII...

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