题目内容
I hear someone _______at the door. Please go and see who _______ is.
A.knock, he B.knocking, he
C.knock, it D.knocking, it
练习册系列答案
相关题目
题目内容
I hear someone _______at the door. Please go and see who _______ is.
A.knock, he B.knocking, he
C.knock, it D.knocking, it