根据下列句子所给汉语意思，写出空缺处各单词的正确形式：Earthquakes are _________(极端) difficult to predict.
He looked shocked, and then burst into _________(笑)
A crowd of 300 supporters warmly ________(鼓掌) her speech last night.
The sun had ______(使… 褪色) the curtains.
The heat and the whisky made him feel _______(眩晕) .
After Yang Liwei succeeded in circling the earth ,_______our astronauts desire to do is walk in space .
| A．where | B．what | C．that | D．How |
we can not figure out ____quit a number of insects ,birds ,and animals are dying out .
| A．that | B．as | C．why | D．when |
He was chosen _________ of the company.
| A．manager | B．a manager | C．the manager | D．as a manager |
In the botanic garden we can find a（n）______of plants that range from tall trees to small flowers.
A．spec ies |
B．group | C．amount | D．variety |
The experiment turned out to be ________, which wasn’t ______ they wanted.
| A．a completely failing; as | B．a complete failure; what |
| C．completely failure; that | D．failed; 不填 |