(Viên chức Mầm non) bài tập tiếng Anh theo chủ đề có đáp án - Test 2

By the time he __________ work and returned home, he was absolutely exhausted.

48/65

By the time he __________ work and returned home, he was absolutely exhausted.

would finish

was finishing

has finished

finished

Giải thích

Đáp án đúng là d