DoyoulikeMaths?Yes.ButI____itdifficult_____.A.think;learnB.find;tolearnC.find;learningD.
A.think;learn
B.find;tolearn
C.find;learning
D.think;learning
我快疯了(也许不至于,是A或B吧),选哪个,请说明理由,越快越好,