In order to keep fit, the old man makes it a rule _____ for a walk after supper every day．
| A．going | B．to go | C．go | D．gone |
If we sit near front of the bus, we’ll have better view.
| A．不填；the | B．the; 不填 | C．a; the | D．the; a |
The Christmas gifts need to be ready next Friday.
| A．by | B．of | C．in | D．at |
For the engine to work, the green button be in the “on” position.
| A．can | B．would | C．must | D．might |
Kids are not allowed to leave kindergartens their parents come to pick them up.
| A．since | B．unless | C．although | D．because |
I have to walk upstairs. The lift down.
| A．was breaking | B．broke | C．will break | D．has broken |