Question

完成句子

用be about to do; be to do和be going to do的适当形式填空。

(1)I ________(be)a scientist when I grow up．

(2)You ________(be)back before 11 o'clock．

(3)I ________(go)to bed when there was a knock at the door．

Answer 1

答案：
解析：

　　(1)am going to be

　　(2)are to be

　　(3)was about to go