We did not foresee the powerful social networking side of the()and its rapidly growing impact on our society.
Considering the needsof the new generation, we propose the concept of the _______ network.
When reading the annual report, we should look out ______ the areas where the company did not comply with the regulations.
Only when we hurried to the airport____ the flight was cancelleD)A)we foundB)did we findC)have we foundD)we have found
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