The audience waited until the curtain rose and then______laughter at the sight of the funny actor.
| A．burst out | B．burst into | C．broke into | D．began with |
Fresh air is good ____ your health.
| A．at | B．for | C．of | D．to |
It's very kind____ you to repair the bike ____ me.
| A．for.for | B．of,of | C．of,for | D．for,of |
We go to school ____ a bike.
| A．in | B．on | C．by | D．ove |
It happened ____ the Long March.
| A．during | B．in | C．at | D．for |
The window is never opened ____ in summer.
| A．but | B．except | C．except for | D．but for |