It was only after I came across that matter how important it was to master a for

It was only after I came across that matter_______ how important it was to master a foreign language

A.did I realize

B.had I realized

C.that I realized

D.when I realized

试题答案

C

考查it was…that…的强调句型。去掉it was…that后，剩下I realized how important it was to master a foreign language only after I came across that matter，是一个完整句子，所以是强调句型。选C。