—Who’s in the room? — Mr. Brown is. He a letter now.
| A．writes | B．write | C．writing | D．is writing. |
The boy is very nervous when he meets strangers.
A. worried and shy B. relaxed C. surprising
There are more than 3,000 students in Longling School.
A. about B. close to C. over
You can return the book to the library tomorrow.
A. come back B. get back C. give back
My prize is a trip to Paris.
A. ship B. travel C. ticket
We should stop polluting the water.
A. making…clean
B. making…dirty
C. making…dry