He ________ smoke a lot, but after he developed a lung disease, he decided to quit smoking.
A. used to
Giải bởi qa.haylamdo.com
Kiến thức: Cấu trúc với “used to”
Giải thích:
Một số cấu trúc với ‘used to’:
1. S + used to + V-nguyên thể: Ai đó đã từng làm gì (hiện tại không còn làm nữa)
=> Phủ định: S + didn’t + use to + V-nguyên thể
2. S + be + used to + V-ing = S + get + used to + V-ing: Ai đó quen với việc làm gì
Sau chỗ trống là động từ “smoke” ở dạng nguyên thể => dùng cấu trúc 1.
Tạm dịch: Anh từng hút thuốc rất nhiều, nhưng sau khi phát bệnh phổi, anh quyết định bỏ thuốc.
Chọn A.
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