I danced for three hours last

I danced for three hours last i danced for an hour. I disappear for three days. I saw three girls ___ when I went into the classroom.理由a.dances b.to dance c.danced d.dancing I have studied English for three months. I have attached to you for three I hear he's coming to see youA:for three daysB:after three daysC:three days agoD:in three days I came to beijing three years ago.I()()()Baijing for three years I'm sorry three.和What are you sorry for? I have been there( )three times.括号里加for吗 给I have come here for three days改错 I stayed in Beijing （for three days） 括号提问 I have been here for three months.同义句 I have been over my homework for three hours i have been here for three months同义句 i had lived there for three years.的意识 I haven't been three for five years I r( ) this room for about three months.