员工比较系统是用来（）的
A、评分
B、评价
C、鉴别
D、排序
参考答案：D
---Does your brother serve in the army?
---No, not now. But he ________ in the army for 8 years.
A．would serve
B．was serving
C．had served
D．served
—Steven! How about my flowers? Be sure to take good care of them.
—Sorry, Mom. I forgot _____ them. [ ]
A. cleaning
B. to cut
C. feeding
D. to water
