题干
根据提示写出正确的英文单词。
Look, this is my city. There are many bikes and buses on the streets. Let's count. There are ____ 
bikes and ____ 
buses. Look here, there are also ____ 
taxis and ____ 
cars. My city is big and beautiful!
答案(点此获取答案解析）
twenty-one,twenty-four,seventeen,thirty
