It is extremely hot this summer __________, many people say it has been the hottest in the past 30 years

I hesitated for a moment before choosing, otherwise, I the mistake.[ ]

Whendid you become a volunteer for the elderly?–Two years ago. I this groupsince then.

we deal with our problems, we can easily become unhappy.

Do you regret not having gone abroad?—Why should I? I ____as much, but I’m glad to devote myself to our motherland