The mother used to her son’s pockets while he was asleep looking for letters from his gir

问题补充：

The mother used to her son’s pockets while he was asleep, looking for letters from his girlfriend.

A. pick out

B. go through

C. deal with

D. look into

答案：

A. pick out

(答案→)B. go through

C. deal with

D. look into

解析：本题的含义是妈妈以前经常在她儿子睡着的时候检查他的口袋，寻找他女朋友的信。Go through可以表示检查的意思，故本题选B。