—Excuse me, does Mr. Chen live here?
—He ______ be here, but he has moved to Nanjing.
| A．used to | B．happened to | C．tried to | D．had to |
-----I have to go now. -----It is raining .
Don’ t ______ until(直到) the rain stops.
| A．run | B．stay |
| C．come | D．leave |
I have a new ______ . I can put my money in it.
| A．glove | B．wallet |
| C．eraser | D．camera |
Water is very dangerous sometimes. So we must be careful _____ it.
| A．of | B．with | C．to | D．in |
In our city, _____ middle school students want to be a teacher in the future(将来) every year.
| A．thousand | B．thousand of |
| C．thousands of | D．two thousand of |
My brother is _____ his homework. He often _____ his homework at home.
| A．does； doing | B．doing； do |
| C．do； doing | D．doing； does |