Question

C) 用括号中所给动词的正确形式填空，使短文完整。

    Flying was once a dream.For a long time people had wanted to be up in the sky.They 11  (try) many ways.But nothing worked.

    Things changed one day in September more than 220 years ago.Two brothers from France made a very large balloon with paper and cloth.To make the balloon 12  (float) , they built a fire inside a basket and hung the basket below the balloon. Tliey thought hot air from the fire would be light enough 13  ( push) up the balloon.Tliey were right!Their hot-air balloon travelled about 2 miies.lt was in the sky for eight minutes.Nobody was on board for the flight.To be safe,they 14  (invite) a duck,a rooster and a sheep to be the first passengers.The hot-air balloon landed safely.No animals 15  (hurt) .

    Two months later,the two brothers 16  (set) off their hot-air balloon again.This time,they had Iwo people inside the basket.The flight lasted 25 minutes.lt also landed safely.That was the first time men had been in the sky!

Answer 1

C)

11. tried此处指过去人们尝试了很多办法飞上天空，故填过去式。

12. float此处考查make sth. do结构，故填动词原形。

13. to push此处考查结构ac^’.+enough to do sth.，故填动词不定式。

14. had invited此处用过去完成时表示在热气球升空前的动作，即过 去的过去。

15. were hurt hurt与animals为被动关系，故用被动语态。注意：hurt 的过去分词形式还是hurt。

16. set此处用一般过去时叙述过去发生的动作。注意:set的过去式 还是set。