With the (introduce) ____of the Internet, more and more people preferred to do business online.(201306)
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No one (allow) ____to take any reading materials out of the reading room.(201306)
The machine suddenly stopped (work) ____because of the power cut.(201306)
We cannot make (nature) ____resources, but gather them from the earth.(201306)
The company (employ) ____more than 50 IT engineers since last year.(201306)