Use the present simple, the present continuous or the past simple tens of the verds given in brackets./ 1. you go) for youe summer holidays? 2.andrew and polly visit) us on sundays.3. they (to write)their homework now? 4. do) last night? 5.mike (to work) in the library now. 6. listen) to the radio yesterday?
2 He did some experiments and came to the conclusion that smoke had the power to lift things up and carry them through the air.
3 The Montgolfier brothers quickly realised that it was heat and not smoke that had the power to lift things.
4 On 19th September 1783, they presented their first hot-air balloon, which was made from paper and cloth.
5 They burned some straw underneath it and the heat helped the balloon to float.
6 A sheep, a duck and a chicken were in the basket that hung below the balloon for the two-mile journey and they landed safe and sound.
7 Shortly afterwards, the brothers asked the king for permission to send men up in the balloon.
8 The king agreed, and the first flight consisting of human passengers took place in Paris on 21st November 1783, with great success
2 He did some experiments and came to the conclusion that smoke had the power to lift things up and carry them through the air.
3 The Montgolfier brothers quickly realised that it was heat and not smoke that had the power to lift things.
4 On 19th September 1783, they presented their first hot-air balloon, which was made from paper and cloth.
5 They burned some straw underneath it and the heat helped the balloon to float.
6 A sheep, a duck and a chicken were in the basket that hung below the balloon for the two-mile journey and they landed safe and sound.
7 Shortly afterwards, the brothers asked the king for permission to send men up in the balloon.
8 The king agreed, and the first flight consisting of human passengers took place in Paris on 21st November 1783, with great success.