—I’m worried about my English．
—_____ harder, _____you will catch up with your classmates．
| A．Working, and | B．To work, or |
| C．Work, and | D．Worked,or |
Mr.Brown always makes his class________and keeps his students________in class．
| A．alive；interesting |
| B．lively；interesting |
| C．alive；interested |
| D．lively；interested |
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 |