用括号里的单词翻译句子。

1.Could you explain to me how to operate the robot?
2.A lot of factories were established there last year.
3.He failed the math exam.
4.He fell down from his bike.
5.Those football fans will never miss watching every match.
6.They are fear of traffic accidents.
7.These activities must fit the interest of the children.
8.There flied two planes just now.
9.I followed Xiao li to go to the countryside during summer vacation.
10.Speak to the foreigners frequently and you will make progress in your English.
11.I have never seen a real fox.
12.They finally got their freedom.
13.Last month, an earthquake happened in their country.
14.The two heroes will give us a lecture tomorrow.
15.I will go on holiday for ten days soon.
16.Where is his hometown?
17. My father will do a lot of housework when he is at home.
18.There is a huge door in the east
19.Human beings must abide by the laws of nature.
20.His aunt's husband is American.
21.He imagined living on the moon.