购物时做价格比较能帮你省很多钱。

Making price ___comparisons while shopping can save you a lot of money.

老师让我们做一个关于猫和狗的对比分析。

The teacher asked us to make ___comparisons between cats and dogs.

老师让我们做一个城市和乡村生活的对比。

The teacher asked us to make a ___comparison between city and rural life.