It my mother half an hour to the shopping mall.
| A．spends; walking | B．takes; to walk | C．spends; to walk | D．takes; walking |
—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 |
It________me half an hour to reach the top of the mountain．
| A．spent |
| B．cost |
| C．took |
| D．paid |