词形转换。用所给单词的适当形式填空。
1. Listening to CDs is my best friend Susan's favourite. She is very _______. (music)
2. Alan is very smart and can always answer questions _______. (correct)
3. If there is no petrol in the car, it will be _______. (use)
4. Peter is very helpful and friendly. He is one of the _______ boys in our class. (nice)
5. At the _______ of next month, we'll go on a trip to the Fragnant Hills. (begin)
6. _______, the other climbers helped Simon to come down. (luck)
7. Giant pandas live in China, and they are very quiet and _______. (peace)
8. Many people all over the world do not understand the _______ of wetlands for birds in the nature reserve.
(important)
9. If a bear is in danger, it attacks. So it is very _______ now. (danger)
10. When we saw the Eiffel Tower from the coach, we became very _______. (exciting)