问题
选择题
They ____________ having an argument at seven o’clock last night when CCTV ______ to broadcast news．
A．were having；started B．will be having；started
答案
答案：A
根据时间状语昨天晚上,可知本句为过去时态,故选A.
搜题请搜索小程序“爱下问搜题”
计灯丝电阻随温度的变化，求：
