选择（）someone knocketthe door while I my breakfast A.on;had B.at;were harving C.on;am

分类: 作业答案 • 2021-12-28 15:47:38

问题描述：

选择（）someone knocket____the door while I____ my breakfast A.on;had B.at;were harving C.on;am
C.on;am having D.at;was having

答

D
敲门 know at the door 固定搭配
所以AC不对
主语I,单数,所以用was having
当有人敲门时,我正吃早饭.

选择 （ ）someone knocket____the door while I____ my breakfast A.on;had B.at;were harving C.on;am