Question

While riding in the street, _______________________________.

A．someone called me from behind	B．I heard my name called
C．my bike broke down	D．an old man knocked down

Answer 1

B

这题考查状语从句的省略式，当主从句的主语一致时，可以省略从句中的主语和be动词，由此可以推断，主句的主语是I，所以选B。