把主动语态改为被动语态

if you wonder what you can do to help people suffering from the snowstorm,the 24 hours hotline of this embassy will be referred to.

Effective measures have been taken quickly by the government to prevent the diseases from spreading.

if引导的从句是不可以改为被动语态，只能改后半句。

if you wonder what you can do to help people suffering from the snowstorm,the 24 hours hotline of this embassy will be referred to.

Effective measures have been taken quickly by the government to prevent the diseases from spreading.

These effective measures to revent the diseases have been taken by the government from spreading quickly