She couldn’t unlock it ______ she had the wrong key.
A. while
B. but
C. though
D. because
Giải bởi Vietjack
A. while: trong khi
B. but: nhưng
C. though: mặc dù
D. because: bởi vì
Ta thấy 2 mệnh đề có mối quan hệ nguyê nhân – kết quả nên liên từ phù hợp là because
=>She couldn’t unlock it because she had the wrong key.
Tạm dịch: Cô ấy không thể mở khóa bởi vì cô ấy đã nhầm chìa khóa.
Đáp án cần chọn là: D
The sun is shining and there are very few clouds; _______, I am sure it is going to rain.
Not many people went to see the film; ________, it received good reviews from critics.
He was the best in class at Maths and English; _______, he was the best footballer in the school.
