If communities _____ sustainable agricultural

practices, they will preserve the health of their local ecosystems.

We ______ a plan for creating a nature reserve for 2

years so far.

On October 15th, 2020, the government officially ____a

subsidy program to encourage the adoption of solar energy.

While the researchers _____ the behaviour of a group

of lions, a herd of elephants was grazing peacefully in the background,

creating a harmonious scene in the wildlife reserve.

I ______ in the mountains last weekend when I stumbled upon a crystal-clear

stream.

Environmentalists _____ tirelessly on raising

awareness and implementing conservation projects for the past two years and

they have still to continue.

I don’t like to go to the country as mosquitoes _______

around me, which annoys me.

Before the construction project began, previous human

activities ______the natural habitat, impacting the biodiversity of the area.

When the first rays of dawn _____through the trees,

nature will awaken.

It is the first time I __________ about this natural phenomenon occurring in the northern lights.