______ experiments on the laboratory, it started to rain heavily.

admin2016-01-04 69

问题 ______ experiments on the laboratory, it started to rain heavily.

选项 A、While performing
B、Performing
C、While I was performing
D、To perform

答案C

解析

转载请注明原文地址:https://kaotiyun.com/show/bziC777K

本试题收录于：英语题库成考专升本分类

0

英语

成考专升本

相关试题推荐

随机试题

最新回复(0)