Đề thi chính thức Tiếng Anh vào 10 năm 2020-2021 (Đề 29)

I passed the test because I ______ a lot to prepare for it.

6/32

I passed the test because I ______ a lot to prepare for it.

had to study

had studied

have studied

was studying

Giải thích

Đáp án B