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Câu hỏi:
Charles _________ his father in the shop until school ____________.
- A. was helping - will start
- B. helped - was starting
- C. is helping - starts
- D. has helped - is starting
Lời giải tham khảo:
Đáp án đúng: C
Kiến thức: Hiện tại đơn, hiện tại tiếp diễn
Giải thích:
Thì hiện tại tiếp diễn dùng cho tương lai: hành động chắc chắn sẽ xảy ra.
Công thức: S + tobe + Ving
Công thức thì hiện tại đơn với “until”: S1 + Vtương lai + until + S + V(s,es): Ai đó sẽ làm gì cho đến khi …
Tạm dịch: Charles định sẽ giúp cha ở cửa hàng cho đến khi trường học bắt đầu.
Chọn C
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