题目内容：

The snow is three feet ____.
A.deeply B.deepen C.deep D.deepened
The robber was ___ with a rifle.
A.arm B.arms C.armed D.arming
It is well know that Thomas Edison ____ the electric lamp.
A.discovered B.invented C.found D.developed
The man who does his duty is ___ of praise .
A.worth B.worthless C.worthy D.valuable
We used the back entrance ____ the office building.
A.at B.in C.by D.to

优质解答

我觉得答案应是CCBCD
1.形容词作后置定语 不定代词后不是有放形容词的情况么
2,be armed with 装备有.
3,艾迪生发明了电灯 故为B discover发现已存在的东西 灯显然是发明的CD发现 发展 不对
4..5.固定短语,记下就成