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

Susan __________ as a nurse for 3 years before her marriage.

53/65

Susan __________ as a nurse for 3 years before her marriage.

has worked

has been working

worked

was working

Giải thích

Đáp án đúng là c