2 sentences

1. 你必须在月底前向协会交纳会费。

   nǐ bì​xū zài yuè​dǐ qián xiàng xié​huì jiāo​nà huì​fèi.

   You must pay your membership fees to the association by the end of the month.

   Source: Dong Chinese Dictionary

2. 财务部门正在负责收缴本季度的工会会费。

   cái​wù bù​mén zhèng​zài fù​zé shōu​jiǎo běn jì​dù de gōng​huì huì​fèi.

   The finance department is responsible for collecting this quarter's union dues.

   Source: Dong Chinese Dictionary