(Viên chức Mầm non) 5000+ câu trắc nghiệm Ngoại ngữ có đáp án - Test 2

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

43/65

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