这个视频对他们提高听力有好处。

Zhè gè shìpín duì tāmen tígāo tīnglì yǒu hǎochu.

This video clip is good for increasing their level of listening skills.

因为货品的价格提高了不少，所以少了客人光顾。

Yīnwèi huòpǐn de jiàgé tígāo le bù shǎo, suǒyǐ shǎo le kèrén guānggù.

Because of the price of goods has increased a lot, fewer customers are buying.

为了提高我们的服务质量，这里有一份问卷要你填一下。

Wèile tígāo wǒmen de fúwù zhìliàng, zhèlǐ yǒu yí fèn wènjuàn yào nǐ tián yíxià.

In order to improve the quality of our service, here is a questionnaire for you to fill out.