【题目】You may rely on _______ he'll come to help you.
A.that
B.it that
C.whether
D.it if

【答案】B
【解析】句意：你可能要依赖他帮助你。rely on意为“依靠”，he'll come to help you是rely on“依赖”的内容，是rely on的宾语，它是个句子，所以用it作形式宾语，再由that引导该句。故选B。