As we all know,new employees cannot develope well ＿＿they lack chances of practising.

分类: 作业答案 • 2022-05-11 22:08:54

问题描述：

As we all know,new employees cannot develope well ＿＿they lack chances of practising.
A.before B.when C.while D.unless

答

答案为B.when 可以用来表条件.此时相当于if