The engineers made two big plans for the dam, （）was never put in force.

单项选择题Jack felt unhappy as they all went outing （）him.

A. except
B. but
C. without
D. besides

单项选择题As time went by, the plan stuck （）fairly practical.

A. to proved
B. to proving
C. proved
D. to be proved

单项选择题—Tom, you are caught late again. —Oh,（）

A. not at all
B. just my luck
C. never mind
D. that's all right

单项选择题The little girl couldn't work the problem out. She wasn't （）clever.

A. that
B. much
C. enough
D. too

单项选择题—Did your sister pass the exam —She failed and is in low spirits. —I'm sorry for her. —（）.

A. Thank you
B. You're welcome
C. I would think so
D. Never mind