The telephone_______Alexander Graham bell in 1860,as we all know .A.was invented by B.were invented byC.invented ofD.invent to

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The telephone_______Alexander Graham bell in 1860,as we all know .A.was invented by B.were invented byC.invented ofD.invent to

The telephone_______Alexander Graham bell in 1860,as we all know .A.was invented by B.were invented byC.invented ofD.invent to
The telephone_______Alexander Graham bell in 1860,as we all know .
A.was invented by
B.were invented by
C.invented of
D.invent to

The telephone_______Alexander Graham bell in 1860,as we all know .A.was invented by B.were invented byC.invented ofD.invent to
A.was invented by
被动语态(BE DONE BY)
电话是被发明的,所以用被动.