It is not always easy for the public to see ____use a new invention can be of to human life.
A.whose B.what C.which D.that
It是形式主语,不定式的复合结构是真正的主语.不定式后面 是宾语从句
答案是 B.what .what use 引导 宾语从句 并作从句中 can be of的宾语
It is not always easy for the public to see ____use a new invention can be of to human life.
A.whose B.what C.which D.that
It是形式主语,不定式的复合结构是真正的主语.不定式后面 是宾语从句
答案是 B.what .what use 引导 宾语从句 并作从句中 can be of的宾语