--- _______ will the fog and haze(雾霾) last? ---I have no idea. There is no sign of an end.
.A: How often ______ she exercise? B: Twice a week.
Jenny isn’t at home_______.
I’m sorry ______that bad news.
Mymathteacher________me,becausehe________Ifailedmytest.
---Do you think it’s going to rain over the weekend?---____________.