I am__English,so l must work harder than before.A.poor in B.poor at C.good at D.well in貌似是B,为甚莫是A

I am__English,so l must work harder than before.A.poor in B.poor at C.good at D.well in貌似是B,为甚莫是A
I am__English,so l must work harder than before.A.poor in B.poor at C.good at D.well in
貌似是B,为甚莫是A

I am__English,so l must work harder than before.A.poor in B.poor at C.good at D.well in貌似是B,为甚莫是A
固定词组
be good at 擅长...在...（方面）很擅长
be poor in 在...（方面）很差

固定搭配。
be poor in 在---缺乏，不充足
be good at = do well in 擅长---

选B.poor at
be good/poor at sth. 善于/不善于...
do well in 善于...

be poor in=be weak in

B