问题

I can’t_____ my work this morning with several children shouting loudly outside.
A:set down
B:center on
C:care about
D:concentrate on
B:center on
C:care about
D:concentrate on
正确答案是:
同类题型
Chinese medicine can sometimes provide a cure______western medicine can’t produce any good result
This is Mr. Green’s ________visit to America. He has never been there before.
They waited for _______ seemed to be a long time, hoping that rescue would come.
I’m than Jack, so I can carry this heavy box.
Paul made a nice cage the little sick bird till it could fly.