If all the plants on the earth die, _______ people _________animals will be able to live.
| A．neither; nor | B．both; and |
| C．not only; but also | D．either; or |
Many houses________in the earthquake of April 20，2013 in Ya’an．
| A．is destroyed |
| B．are destroyed |
| C．was destroyed |
| D．were destroyed |
—What languages________in that country？
—German and English．
| A．are speaking |
| B．are spoken |
| C．speak |
| D．is spoken |
Battery-operated slippers are used________seeing in the dark．
| A．to |
| B．as |
| C．by |
| D．for |
The Eiffel Tower________by the French engineer Alexandre Gustave Eiffel for the Paris Exposition(巴黎博览会)of 1889．
| A．designed |
| B．was designed |
| C．will design |
| D．will be designed |
—I won’t come to the party unless Sue________，too．
—You mean if Sue comes，you will come．
| A．will invite |
| B．invites |
| C．invited |
| D．is invited |