He asked his father .
| A．where it happens | B．what was happen | C．how it happened | D．what happens |
Our teachers always encourage us aloud in English class.
| A．to read | B．read | C．reading | D．reads |
I’m in any books.
| A．interested; interesting | B．interesting; interested |
| C．interests; interest | D．interested; interests |
I decided to write rather than________.
| A．telephoning | B．telephoned | C．telephone | D．telephones |
—It’s necessary ____ our environment(环境). —I agree with you.
| A．protect（保护） | B．protecting | C．to protect | D．protects |