—What were you doing at this time yesterday?—We _______ in the classroom. A. read B. were reading C. was reading
Haze weather has become common in some major cities in China. We all wonder ________.
---Bob, when can we watch TV? ---Not until it _______ next week.
Time is the thing _____ never comes back. We should make full use of it.
_______role she played in the movie! That’s why she has a lot of fans.
This work needs close teamwork.____will be achieved unless we work well together.