In communication, a smile is usually ___ strong sign of a friendly and ___ open attitude.
| A．the; / |
| B．a; an |
| C．a; / |
| D．the; an |
It’s uncertain ____ the fashion show will be held next week.
| A．what | B．why |
| C．whether | D．that |
Some policemen were sent there to ________ the villagers ________ the trees.
| A．keep; cutting down | B．prevent; cutting down |
| C．prevent; to cut up | D．stop; to cut up |
______ the kids have left home , we’ve got a lot of extra space.
| A．Even if | B．Now that |
| C．In case | D．As though |
The news _____ the spaceship succeeded in returning to the earth spread everywhere.
| A．that | B．which |
| C．whether | D．what |
Kate asked the girl to ________ so that she could hear what her husband said on the phone.
| A．slow down | B．come down |
| C．settle down | D．break down |