It's more important for them ---to think in the language tha

It's more important for them ___to think in the language than___the meaning of every word.
a,learning……knowing
b,learning……to konw
c,to learn ……konwing
d,to learn ……to konw
第二题：I think it difficult for me to _______my own conclusion.
a,from
b,make
c,discove
d,speak
请选择正确答案,并做出解释,然后译出全句的意思
谢谢