I am too tired. I _____ my homework all morning. A have been doing B did C do D have done
2023-01-11 18:48:15 44次 北京市20092010学年高一下学期期中考试试题（英语） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I am too tired. I _____ my homework all
morning.
A have been
doing B
did C
do D have done
本题链接：
