----ThestudentsofGrade9inChangchunhavetotakepartintheP....

问题详情：

----The students of Grade 9 in Changchun have to take part in the P.E. test from 2016.

  ----Yes. ________ you want to pass it and be stronger, practice more.

 A. until    B. if    C. unless    D. or

【回答】

B

知识点：连词

题型：选择题