我猜他们那个时候肯定在看电视 I suppose they —— —— —— TV at home at that time.
问题描述：
我猜他们那个时候肯定在看电视 I suppose they —— —— —— TV at home at that time.
答
您好，楼主！！
were specifically/definitly watching
祝学习进步！！
答
I suppose they （must）（be）（watching）TV at home at that time.
mush be doing这里表示肯定的推测,“一定在做什么”.
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