They have _________ a lot of extensive research into renewable energy sources.

This winter wasn’t_______ as difficult as last winter.

After four hours of walking in the hot summer sun, we were _____________ for a drink.

Students can _________lots of information by attending lectures regularly.

I'd like to ______ this old car for a new model but I can't afford it.

The terrible weather may have _____________ the small population.

If one wants to take part in volunteer organisations such as Green Summer Camp, Green Saturday Movement, Blood Donor, he/she will have to ______ an application form.

Three wolves ran through the forest in _________ of a deer.

Even the most _____________ individuals can be thrown into a mild panic at the prospect of organizing a wedding.

Do you often _____ your intuition and then make a choice based on your feelings?

It is not _______ to be drunk in the street.

Vietnamese athletes compete regionally and internationally and ______  high ranks in many sports.

To attract the waiter’s attention, wait until you _______ and raise you hand slightly.

We're best friends as we have a ______ interest in music.