The teacher asked us to write _______article about pollution.
| A．a 800-word | B．an 800-word |
| C．a 800-words | D．an 800-words |
Listen! Someone _________ for help!
A. called B. is calling C. has called
I am going to make ________special house for my pet pig this weekend.
A. an B. a C. the
Healthy food and exercise help ________to study better.
A. us B. we C. our
________is dangerous for us to swim in the river alone.
A. It B. That C. This
She likes reading. She usually________ some books from the library.
A. buys B. lends C. borrows