Voice
All his friends laughed at him.

He was laughed by all his friends.
He was being laughed by all his friends.
He was being laughed at by all his friends.
He was laughed at by all his friends.

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Voice
The government has not approved the new drug for sale.

The new drug was not approved by the government.
The government approval for the sale of the new drug has not been given.
The new drug has not been approved for sale by the government.
For the sale of the new drug we have not been given the approval.

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