我已经在这里呆了两周了。

　　16、 How many songs has he learned so far?

　　他到目前为止学了多少歌了?

　　17、 How long have you been a member of Greener China?

　　你成为绿色中国的一员多久了?

　　18、 I’ve been with Greener China for a year、

　　我跟随绿色中国一年了。

　　19、 What have you done since you joined Greener China?

　　你加入绿色中国后都做了什么?

　　20、 Have you ever thrown any litter onto the ground?

　　你有没有往地上扔过东西?

　　21、 If your answers are No， it means that you have already helped protect our environment、

　　如果你的回答是否，它意味着你已经帮助保护了我们的环境。

　　22、 Have I ever picked up some rubbish and thrown it into a dustbin?

　　我有没有把垃圾捡起来扔进垃圾筒呢?

　　23、 Have I ever collected waste paper or bottles for recycling?

　　我有没有为回收而收集废旧纸张或瓶子呢?

　　24、 Have I ever planted any trees or flowers in or near my neighbourhood?

　　我有没有在社区附近种过树或花呢?

　　25、 If your answers are Yes，it means that you have already done something useful to improve the environment、