—Do remember to tell Tom the good news.—OK.I will tell him( )I see him

题目

—Do remember to tell Tom the good news.—OK.I will tell him( )I see him
A.suddenly B.if only C.the moment D.while
该题正确答案应选C,请问为什么不能选B?B也可以说得通啊

答案

答案是C,因为这里the moment 后面省略了that,表示“一.就...”,if only 一般用在虚拟语气里面.