Present Perfect vs Past Simple, Present Perfect vs Present Perfect Continuous, Future Continuous vs Future Perfect, Modal Verbs

Someone _____ a window in our classroom.

Scientists _____ more than 30 unknown insects.

Aztec civilization _____ in the Valley of Mexico, 7,500 feet above sea level.

Leonardo da Vinci _____ the Internet.

He _____ Latin when he was a schoolboy.

How long __________ French?

Our climate _____ much warmer.

I _____ by plane, but I haven't flown in a helicopter.

I _____ to Africa last year.

My eyes aches. I _____ all day.

I hope you _____ long.

William Shakespeare _____ in some of his own plays.

This time next week __________ at my new school.

By the time we get home, the match _____.

What __________ in ten years' time?

Next Tuesday at this time __________ on the beach.

In my opinion, by the end of the 21-st century people __________ living on other planets.

The next earthquake _____ happen tomorrow. (possibly)

The next earthquake _____ happen for another fifty years. It's impossible to predict exactly.

The sky looks a bit grey. It _____ rain later.