At the conference, Premier Li Keqiang urged all the government departments effective measures to improve work efficiency.
A. took
B. must take
C. take
D. are to take
网友回答
A. took
B. must take
(答案→)C. take
D. are to take
解析：考查虚拟语气。本题中的动词urge（敦促）后面的宾语从句要使用should+动词原形；其中的should可以省略；句意：在会议上，李克强总理督促所有的政府部门要采取有效措施来提高工作效率。C项前面省略了should。故C正确。