题文
It will take _____ years to make robots _____ the most unpleasant things .
| A.hundred ; to do | B.hundreds of ; to do |
| C.two hundreds; do | D.hundreds of ; do |
It will take _____ years to make robots _____ the most unpleasant things .
| A.hundred ; to do | B.hundreds of ; to do |
| C.two hundreds; do | D.hundreds of ; do |
试题篮
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