九年级英语题,快!

问题描述:

九年级英语题,快!
Most of the clubs need students to do volunteer work_____the know the peoblems of kids very well. A. if B.because C.unless D.until

B.because,大多数俱乐部需要学生去做志愿者工作,因为他们非常了解这些孩子们的问题.后边的the应为they.