Tom runs more slowly than_____(I,me,I do,I am

问题描述:

Tom runs more slowly than_____(I,me,I do,I am
为什么

Tom runs more slowly than I do.
Tom ---I
Tom runs ----I run
Tom runs more slowly than I run
Tom runs more slowly tha I do.
than 的 两 边 应 该 平 行 对 等 .