下载APP
【单选题】
______ for your help, we'd never have been able to get over the difficulties.
A.
Had it not
B.
Had it not been
C.
If it were not
D.
If we had not been
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Whether or not the next plan will yield any positive results ____ to be unseen.
A.
remain
B.
remains
C.
is remained
D.
have remained
【单选题】The circulatory system is divided into three major parts: heat, blood and blood vessels.
A.
循环系统分为：心脏，血液和血管。
B.
循环系统分为三大部分：心脏、血液和血管。