You must get the work before Friday. A. doB. to doC. doingD. done

问题补充：

You must get the work before Friday.

A. do

B. to do

C. doing

D. done

答案：

A. do

B. to do

C. doing

(答案→)D. done

解析：：考查固定用法。Get sth done让某事被做。句意：你一定要在周五之前把工作完成。故D正确。