问题
ed a lot of questions, and none of______ was easy to answer.
A:them
B:which
C:what
D:that
B:which
C:what
D:that
正确答案是：
同类题型
Only in that way ______ the challenges and opportunities in life.
It’s taking the trouble to explain a job fully to new employees.
Don’t blame the worker He just carried out theorder______
My mother ______ the window already, so the room looks much brighter.
He was wearing a lot of clothes to _____ himself from the cold.