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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