Question

I _________ my pen when I _____________ in the park.

A．lost; was walking	B．lost; walked
C．was losting; was walking	D．was losting; walked

Answer 1

A

考查时态。句意“当我正在公园散步时，我的钢笔丢了。”lose是短暂性动词，不能用于进行时，排除C、D；根据句意可知，A项正确。故选A。