-____________ do you do volunteer work?
- Once a month. I think it is meaningful.
| A． |
How often |
B． |
How far |
C． |
How many |
D． |
How long |
Computers________widely in our daily life．
| A．use |
| B．used |
| C．were used |
| D．are used |
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 |