Question

Fill in the gap.

The national park was opened . the government.

by

with​

Answer 1

The national park was opened BY the government.

Предлоги by и with обычно употребляются в страдательном залоге (The Passive Voice) . Предлог by употребляется тогда, когда речь идёт о лице , которое совершило действие.

Answer 2

The national park was opened by the government