Prep. & Adv.
1. I can’t hear the radio very well. Can you turn it ___________ a bit?
2. The club was so noisy that we had to shout ___________ the top of our voice.
3. She goes to the greengrocer’s in the afternoon and buys the vegetables ___________ a lower price than in the morning.
4. He wrote a letter to apply ___________ the job he read in the newspaper ad.
5. It’s considerate of the hospital to provide a playroom ___________ the children.
6. We would welcome your comment ___________ our work.
7. It’s ___________ the traffic rules to park here. You’ll get a traffic ticket if you do so.
8. The weather forecast says the rain will stop ___________ the end of this week.
有无穷多解，则a=（）。