Jack is polite and helpful.这句话的同意句
问题描述：
Jack is polite and helpful.这句话的同意句
他们来自哪儿？（汉译英）
答
Jack is always polite and helpful .
Jack is polite and helpful.这句话的同意句
他们来自哪儿？（汉译英）
Jack is always polite and helpful .