rely on

A. 坚持
B. 依赖,依靠
C. 继续
D. 生存

be responsible for

A. 因…而受到责备
B. 因…而感激
C. 控诉…
D. 对…有责任

apply for

A. 申请
B. 运用
C. 为…道歉
D. 申请信

It is a little difficult for me to____the problem.

A. answer
B. answering
C. answered
D. answers

Qian Xuesen devoted all his life to______scientific research.

A. do
B. doing
C. did
D. does

He told his students to be careful next time. 其中to be careful做什么成分？

A. 宾语
B. 宾语补足语
C. 间接宾语
D. 直接宾语

独立是高中和大学重要的区别。____ is the major____ between high school and ____.

参加学生俱乐部是提沟通技巧,交朋友和享受你的爱好的好方法。____ student clubs is a good way to____ communication skills, to ____ and enjoy your hobbies.