The great inventor,Edison ______ over 1.000_______in his lif

The great inventor,Edison ______ over 1.000_______in his life .
A,invented,invention
B,invented inventions
C,has inventions ,invention
D,had invented inventions
Perhaps in the future robots will ______ problems for man .
A,invite B,invent C,cause D,make
解渴 1年前 已收到2个回答 举报

丹琦 幼苗

共回答了26个问题采纳率:84.6% 举报

1.选D 爱迪生已经不在了,用过去式,但后面的“in his life”是一个时间段,要用完成时
2.选D cause一般指具体事件 eg:his carelessness cause this accident (但是暗地里觉得cause也正确)

1年前

8

活性炭 幼苗

共回答了2个问题 举报

D . 用过去完成时,had invented 发明用名词形式 inventions
D . make problems 是常用语 产生问题/ 制造麻烦

1年前

2
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