1. I like to listen to the stories about my dad's ______（童年）.
2. Have you ______（曾经）tried any outdoor activities?
3. The discussion ______（集中）on three main problems yesterday.
4. The rain kept ______（落下）for a whole night.
5. He is ______（明显地）in a good mood today.
6. He had the body of a man and the m______ of a child.
7. Drink some water whenever you feel t______ during exercise.
8. B______ means watching birds, studying birds and learning about changes in their numbers.

1. childhood 2. ever 3. focused 4. falling
5. clearly 6. mind 7. thirsty 8. Birdwatching

1. The road is closed ______________ the snow.
2. Tom's old computer ran fast five years ago, but ______________ it became really slow.
3. You ______________ do some sports after supper every night.
4. At last we ______________ our sleeping bags and slept under the stars.
5. If you feel a little unhappy, just ______________ and enjoy yourselves during the trip.

1. because of 2. little by little 3. had better
4. rolled out 5. relax

1. — When ______ your mother ______ you that blue dress, Mary? — Last week.
A. does; buy B. does; bought C. did; bought D. did; buy
2. Our teacher helped us ______ the tent when we went camping.
A. put on B. put up C. put out D. put off
3. — Millie, why ______ you go camping with your classmates?
— I was too ______ and I couldn't sleep all night. So I missed the bus this morning.
A. did; exciting B. didn't; exciting C. did; excited D. didn't; excited
4. — We, middle school students, are sometimes ______ to tell right from wrong.
— That's why we did something wrong.
A. too young B. too old C. young enough D. old enough
5. — Can I go to play football with my classmates as soon as school is over?
— ______ We have to prepare for the coming Art Festival together.
A. Why not? B. I hope so. C. I'm afraid not. D. Of course.

1~5. DBDAC

1. 当我们到达半山腰的时候，我们都很累。
When we reached ______________ the mountain, we ______________.
2. 我发现专注于学习有点困难。
I find it a little difficult to ______________.
3. 振作起来！不要闷闷不乐。
Cheer up! Don't ______________.
4. 如果天黑了，不要在外面待到很晚。（stay out late）
______________________________
5. 这是一个接近自然的好机会。（be close to）
______________________________

1. the halfway point up; were all tired 2. focus on my study 3. feel down 4. If it gets dark, don't stay out late. 5. It's a good chance to be close to nature.