Question

When I was walking in the street, I saw a plane___________ over my head.

A．flies

B．flying

C．flew

D．fly

Answer 1

B

考查感官动词see的用法。see sb. do sth.“看见某人做了某事”；see sb. doing sth.“看见某人正在做某事”；句意“当我在街上走时，我看见一架飞机在上空飞行。”故选B。