Your house is very beautiful 为什么you后面要加r

Your house is very beautiful 为什么you后面要加r Your English is very good中为什么要加is This bag is very beautiful 为什么加is Your dress is very beautiful! Your space is very beautiful! Is this your hand is very beautiful Your dress is very beautiful,Mary. your place is also very beautiful! That car beside the house is very beautiful. It looks very nice you.为什么look后面要加s? (1/6)1.Your dress is very beautiful( ) A.Oh,no.B.Thank you.C Your dress is very beautiful.Thank you ,but it's only a___