The students all wear the same uniform so it’s hard for me to my son among them.A. bring o

问题补充：

The students all wear the same uniform,so it’s hard for me to my son among them.

A. bring out

B. pick out

C. pick up

D. break out.

答案：

A. bring out

B. pick out

(答案→)C. pick up

D. break out.

解析： A使…显露；出版；取出；B挑选出；辨认出；C用车接，无意中学会，接受信号，恢复；D（战争，火灾）爆发；句义：这些学生都穿着同样的校服，让我很难从中辨认出我的儿子。根据句义说明C正确。