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Câu hỏi:
I ______ my teeth when I ______ dinner.
- A. break/ am having
- B. broke/ was having
- C. broke/ am having
- D. was breaking/ had
Lời giải tham khảo:
Đáp án đúng: B
Kiến thức: Thì quá khứ đơn, thì quá khứ tiếp diễn
Giải thích:
Thì quá khứ tiếp diễn dùng để diễn tả một hành động đang xảy ra thì một hành động khác xen vào. Hành động đang xảy ra chia thì quá khứ tiếp diễn, hành động xen vào chia thì quá khứ đơn.
Công thức: S1 + Ved/ V2 + when + S2 + was / were + V_ing.
Tạm dịch: Tôi gãy răng khi đang dùng bữa tối.
Chọn B
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