Choose the best answer.
She ________ (play) the piano when our guests _______ (arrive) last night.
A. was playing/ arrived
B. played/ arrived
C. was playing/ were arriving
D. had played/arrived
Giải bởi Vietjack
Hành động đang diễn ra và kéo dài dùng thì quá khứ tiếp diễn.
Hành động xen ngang dùng thì quá khứ đơn.
Công thức: S + was/ were + V-ing when S + Ved/V2
=>She was playing the piano when our guests arrived last night.
Tạm dịch: Cô ấy đang chơi pinao thì những vị khách bước vào.
Đáp án cần chọn là: A
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