Our planet is about ______ years old.
| A．35,000 | B．4600 | C．4600 million | D．500 million |
the beginning of the term, my mother bought me a new schoolbag.
A. With B. On C. At
—What is a resolution？—It’s .
A. a promise B. an action C. a message
My grandfather me a postcard from New York last week.
A. gave B. sent C. passed
—are you going to visit your uncle?— Next week.
A. Where B. Who C. When
This is an important problem. Please .
A. write it down
B. write down it
C. write it in