连词成句：

一个完整的生态系统包括（  ）

    ----- No, there isn’t. But there is ________ mutton in it. 

①我国企业增加对美国的投资               

②不利于中国居民赴美旅游

③有利于中国商品对美国出口               

④用同样数量人民币能进口更多的美国商品

   My name is Tom. My best friends are John and Ann. John lives near my house and we are in the same class. He’s tall and thin, he has blonde hair and blue eyes. He is polite and very clever. He is very good at math and sometimes helps me with my homework sometimes. He usually wears jeans and a blue T--shirt. We three often play basketball in a nearby park.
   My friend Ann studies at another school.She’s short and slim(苗条的) with straight brown hair and brown eyes. She’s a little bit shy. We all have Kong fu lessons every Tuesday and Friday afternoon. We love Kung fu very much. Ann is really good at Kung fu. We call her the “Kong fu girl”. Sometimes she practices Kung fu with us. She loves wearing a T—shirts and a hat. The three of us have great fun together.