Choose A, B, C or D that best completes each of following unfinished sentence.
I………………a research since last week. I will finish it this Friday.
-
A.
have studied
-
B.
have been studying
-
C.
are studying
-
D.
study
Kiến thức: Thì hiện tại hoàn thành tiếp diễn
Thì hiện tại hoàn thành tiếp diễn diễn tả hành động bắt đầu ở quá khứ và còn đang tiếp tục ở hiện tại (nhấn mạnh tính liên tục).
Cấu trúc: S + have/has been Ving
=> I have been studying a research since last week. I will finish it this Friday.
Tạm dịch: Tôi đã làm bài nghiên cứu từ tuần trước. Tôi sẽ hoàn thành nó vào thứ 6 này.
Đáp án : B
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