Bill's mother won't let him go out with his friends …………………. .
A. after he had finished his homework
B. once he finished his homework
C. until he has finished his homework
D. when he finished his homework
Giải bởi Vietjack
Câu 14: Đáp án C
Giải chi tiết:
Trong câu chứa mệnh đề chính (chia thì tương lai) và mệnh đề phụ chỉ thời gian (bắt đầu bằng các liên từ “when, after, before, until, as soon as,…) => động từ MĐ thời gian chia thì hiện tại (hiện tại đơn, hiện tại hoàn thành,…)
Loại A vì động từ chia quá khứ hoàn thành
Loại B, D vì động từ chia quá khứ đơn
Tạm dịch: Mẹ của Bill sẽ không cho cậu đi chơi với bạn cho đến khi cậu làm xong bài tập về nhà.
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