将下列句中的汉语译成英语，注意使用适当的形式。（共5分）Alan is very sad and it is all _________ you.(因为)
How many friends do you have _________ ?(到目前为止)
I __________ a quite funny story yesterday.(编造)
I like my English teacher best. She always __________ me.(关心)
Their pens __________ ours.(与…相似)
They expected that they could solve the problem by________（they）．
________（polite），he drove the old man out of the room and shouted at him angrily．
Be careful to cross the street when we meet heavy________（traffic）．
My mother can’t sleep well，and sometimes she even stays________（wake）the whole night．
Is it possible for us human beings to leave all the animals in the________ ________（自然环境）？