我们一起做这个工作，好吗？

Wǒmen yìqǐ zuò zhège gōngzuò, hǎo ma?

Shall we do this work together?

老师说我们今天要写一个小作文。

Lǎoshī shuō wǒmen jīntiān yào xiě yí gè xiǎo zuòwén.

The teacher said we need to write a short composition today.

老师今天给我们布置了很多作业。

Lǎoshī jīntiān gěi wǒmen bùzhì le hěn duō zuòyè.

The teacher gave us a lot of homework today.