What are your greatest achievement?

Some people say it's when Yuri Gagarin first_______ to space in 1961.

• travel

• traveling

• traveled

However, 70 years before that we______even fly.

• can't

• wasn't

• couldn't

In 1903, the Wright brothers______the first people to fly a plane

• did

• was

• were

Other people talk about electronics. We didn't ______ to have a radio or television 120 years ago.

• use

• used

• using

Some say fire is our greatest success. We all love ______ a fire outdoors when we go camping but the lives of early humans changed because they could ______ food and stay warm.

• build /cook

• building / cooking

• built / cooks

And how about photography? I ______ hundreds of photos while I ______ staying in Grece.

• take / were

• took / was

• taking / did

What about modern achievements? Opportunity ______ to mars in 2004 and explored for 14 years.

• go

• goes

• went

And there ______ smartphones in Japan in 1999 and now more than 2.5 billion of people ______ one.

• was / had

• were / have

• be / are having