We must learn how to____these“problems”_____“challenges”

题目

We must learn how to____these“problems”_____“challenges”
A.change;into B.change;to C.turn;to D.change;with
麻烦辨析一下四个选项,

答案

a b c 都是对的.出题不严谨.
turn -- - into- - -
change -- -to / into - - -
都解释为“把 - - -变成 -- - ”.