1 . 用方框中单词的适当形式完成下列句子， 每个单词只能用一次。

disappoint          origin             regular       patient        formal        explore          various

1. People change their mind for a ___________ of reasons.
2. Our school _________ invites university professors to give lectures on science.
3. To his _________, the basketball team lost the championship game.
4. On __________ occasions, you can wear anything you want, like T-shirts and jeans.
5. Their _________ idea was to fix their old computer, but they decided to buy a new one instead.
6. As a doctor, when working with _________, my efforts are centered on helping them overcome illness.
7. After _________ the old part of the town in the morning, we made our way to the modern part after lunch.

2 . Now, some countries claim that museums have a responsibility to return these antiquities to their original locations. (用标准符号画出句子内部成分, 英译汉)

3 . A rise in gas prices will speed up the search for ________ energy sources.

A．experimental

B．identical

C．alternative

D．original

4 . 选词并用其正确形式填空

feature,       confirm,     conference,   evident,     generous,     original,       talent,       various

1. We are waiting the government to ________ the date when we can go to school.
2. There was no ________ to show that the Arab had stolen the camel.
3. He treated them with kindness and ________.
4. The festival ________ a parade and a great feast with music, dancing, and sports.
5. The ________ painting is now in the National Gallery in London.
6. There is a wide ________ of patterns to choose from.
7. The hotel is used for exhibitions, ________ and social events.