1 . In striking contrast to his elder brother, Henry always seems ________（energy）. (所给词的适当形式填空)

2 . 这一节日于每年农历六月初四开始，通常持续三天。
The festival ______ on the fourth day of the sixth month of the ______ calendar, usually ______ for three days.

3 . Animal welfare activists are ________ (concern) about the treatment of circus animals. (所给词的适当形式填空)

4 . ________ (effect) conservation strategies can prevent wildlife extinction. (所给词的适当形式填空)

6 . The astronauts were________(disappoint) because they had to pause their ongoing mission. (所给词的适当形式填空)

7 . Whenever he was ________(absorb) in his world of music, he forgot to eat and sleep altogether. (所给词的适当形式填空)

8 . A county is not a country. What’s the ________(strike) difference between the two words? (所给词的适当形式填空)