1.The child needs __ medical attention at a hospital.
2.Goods must be __ for any particular purpose made known by the seller.
3.You should write in a style __ to your subject.
4.The weather in the hills can change very quickly, so take __ clothing.
用suitable fit proper appropriate 填空
解释一下为什么!谢谢:)
参考资料:百度一下