The letter I looked forward to coming at last.改错,哪里错了?

The letter I looked forward to received at last The letter I looked forward to coming at last.改错,哪里错了? 高中英语一题改错The letter I looked forward to received at last 怎么改, 英语翻译Thank goodness!The letter i looked forward to reaching me at last. 改错 he looked sad at the letter He looked t____ the letter and then went out i received my parents'letter at last,____for a long time1.to which i had looked forward2.which i had looked to2.which i had looked forward to Thank goodness!The letter I looked forward to_____(reach)me at last.应填reached,可是为什么呢?为什么不用look forward to doing sth. i looked out of the window是什么意思 I is the ()() letter in the ABC She looked forward to the letter which /that came at last.的主语是什么? 能不能从以下两个例句中比较look forward to 的用法?The letter she looked forward to came at last.I am looking forward to visiting your country in the near future. I looked at the sky then I miss you . I want to send the letter是什么意思 i ()()()reading the letter我读这封信很费劲 I looked out the window at the rain outside是什么意思 高一必修3英语：The letter i（ ）hasn‘t arriwed yetA.was looking forward toB.am looking forwardC.have been looked forwardD.have been looking forward to The old man looked as_____as he could at the letter from his son and looked _____(care)用所给词的正确形式填空