英文两道语法题不懂!

题目

英文两道语法题不懂!
1._______ ,his proposition is of greater value than yours.
A.All things considering
B.All things considered
C.All things being considered
D.All things to be considered
为什么?选ABC为什么不行?
2.Their car broke down in the wilderness there was nothing to do but____help to arrive.
答案是wait for,为什么不是waiting for?我记得but后面加名词啊?
谁答得全面分给谁.

答案

1.整体考虑之后,我们觉得他的建议比你的更有价值.
All things considered是伴随状态,在考虑了之后,说明已经完成了.
A.All things considering ,things 和consider是被动关系,所以不能用ing形式
C.All things being considered,being表示正在进行的意思.所以不行
D.All things to be considered to be有将来的意思,也不行
2.There is nothing to do but do.表示 只能做.
固定句型.but当介词的时候后面用动名词.