——_________ should your robot need_________ batteries?
——Every two months.
| A．How soon, to be changed | B．How long, to change |
| C．How much, change | D．How often, to change |
--- did you go last week?
--- We went to Beijing.
A. Who B. When C. Where
We waited over hour for the train.
A. a B. an C. the
We couldn’t have a party the heavy snow.
| A．because | B．if | C．so | D．because of |
Lu Xun is famous(著名的)all the people know it.
| A．as; as | B．so; that |
| C．such; as | D．so; as |
Tina her grandmother three days ago.
| A．visits | B．is visiting |
| C．visited | D．visit |