--Would you please give me a hand and take the bookcase upstairs?-- _____.
Our classroom must______every day. A. clean B. be cleaned C. is cleaned
The boy always makes _______ cry. A. she B. her C. hers
Tea was invented by _______ accident. A. an B. the C. \
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.