He回答
A
when the door opened and the manager came in.

A. was smiling

B. smiled

C. is smiling

D. has smiled
出自:广东开放大学大学英语1(专,2021秋)

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块