英汉互译。
1. by plane ______________________
2. have a picnic ______________________
3. do homework ______________________
4. have a sore throat ______________________
5. do an experiment ______________________
6. 收集树叶 ______________________
7. 看大象 ______________________
8. 买礼物 ______________________
9. 画画 ______________________
10. 划船 ______________________
