The house is ________ the river．You can see it easily．
| A．in front |
| B．in front of |
| C．in the front |
| D．in the front of |
If more trees ______ planted, our city will be more beautiful.
A. were B. are C. will be
That man ______ be my English teacher. He has gone to Canada.
A. needn’t B. mustn’t C. can’t
－ ______ does your mother watch the Talk Show?
－ Once a week.
A. How long B. How often C. How soon
The students are helping the old man clean ______ house now.
A. her B. him C. his
It’s cold outside. You’d better ______ your coat.
A. put on B. take off C. put away