![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
[主观题]
My mother remained at the top of the hill because she did not want to climb the ______ of
stairs.
A.flight
B.series
C.plenty
D.group
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
A.flight
B.series
C.plenty
D.group
第6题
第7题
第8题
第9题
第10题
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!