—How much is the computer?
—About three yuan.
A. thousand B. thousands of C. thousands
He _____ there _____ his father came.
| A．didn’t wait…till | B．left…till | C．waited…until | D．waited…after |
I wonder what you mean __________ saying that?
| A．for | B．by | C．with | D．to |
“Remember not ______ your homework at home again,” said the teacher.
| A．leave | B．to leave | C．forget | D．to forget |
Our Earth will be ________ if we go on cutting down millions of trees every year.
| A．in great danger | B．danger | C．dangerously | D．out of danger |
Trees provide food and shelter and make us ______ comfortable.
| A．feeling | B．feel | C．feels | D．felt |