----Goldfish don’t know __________ to them three seconds ago.
----Really? It’s so amazing!
| A．what is happening | B．what to happen |
| C．what will happen | D．what happened |
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 |
---Could you please tell me ________?
--- Yes. There’s one on the Center Street.
| A．where can I buy some stamps |
| B．when you will take your vacation |
| C．when was the telephone invented |
| D．if there are any good restaurants around here |
It's of you to speak with your mouth full of food.
| A．kind | B．polite | C．impolite | D．active |