Tiếng Anh Lớp 10: The light failed the moment they began work. A.  But for the light failed, they would have begun work. B.  Hardly did they begin wo

Tiếng Anh Lớp 10: The light failed the moment they began work. A.  But for the light failed, they would have begun work. B.  Hardly did they begin work when the light failed. C.  Hardly had they begun work when the light failed. D.  As soon as the light failed, they began work., giúp em giải bài này ạ, em cảm ơn thầy cô và các bạn nhiều.