I used to in the river. But now I am used to in the swimming pool.
| A．swim; swimming | B．swim; swim |
| C．swimming; swimming | D．swimming; swim |
We many English words in the last few years.
| A．learn | B．have learned |
| C．will learn | D．learned |
As an excellent student, the boy makes mistakes in his exams.
| A．always | B．usually | C．seldom | D．sometimes |
Kate is girl. She's very happy at school.
| A．a 18-year-old | B．an 18-year-old |
| C．an 18-years-old | D．a 18-years-old |
The bridge __________ by the farmers themselves in 1982.
| A．is built | B．was built |
| C．built | D．was build |