We were swimming when it _____________to rain.( )a.begin c.beganb_英语解答

We were swimming when it _____________to rain.
( )
a.begin c.began
b.begins d.begun

人气：273 ℃　时间：2019-09-23 09:42:01

解答

C 是正确选项.
开始下雨的时候我们正在游泳.
用一般过去时与主句的过去进行时对应.