Then people began to c down trees and build factories.but now the pollution is getting more s .Then people began to c ___ down trees and build factories.but now the pollution is getting more s___ .

people began to use mobile phones(phone) from then on.哪个是对的 Then people began to c down trees and build factories.but now the pollution is getting more s .Then people began to c ___ down trees and build factories.but now the pollution is getting more s___ . 英语翻译原句：从那以后,人们开始了保护水源.A）Since then,people begin to care about water.B）Since then,people began to care about water.应该用begin还是began?为什么? 英文翻译:by talking to people about then. people began to play them not long ago中文翻译 She then began to make up her face.to make up her face是began的宾语补足语? she then began to make up her face为什么began后面的动词make不是过去式made? Old people ate raw food and then they began to eat _______ food.(cook)用括号中所给的单词的适当形式填空.各位老师能否告诉一下,为什么这样填?谢谢! 英语改错,急求帮忙 ：I greeted to them in English and then began to chat. she then began to make up her face.其中then是否可以放句首,还有began是动词作谓语吗?如题 英语盲填And then he simply began to sing quietly ____the man on the stage. then the sons began to work at once是什么意思翻译成中文 速度啊! then suddenly,black c___ covered the sun.it began to rain, then she took an apple from the tree and began to eat it . Then both began to laugh in low,predawn voices.怎么翻译? 9.All the players came to the sports field at 7:30 and________.A.then the game beginB.then did the game beginC.then began the gameD.began then the gameB错的 she then began to make up her face中then的位置then表示然后一般不是放到句首或着句尾吗 为什么放到了主语的后面 Alpacas are ancient animals. People began to found t___ 6,000 years ago.Alpacas are ancient animals. People began to f___ them 6,000 years ago.