It’s polite ______ “Thank you” when you receive something from someone.
journey n. A.桥梁 B.珠宝 C.旅行,行程
imagine v. A.创造 B.想象 C.如果
blood n. A.血 B.洪水C.污染物
broken adj. A.破损的,残缺的 B.打坏 C.休息
control v. A.改变 B.调整 C.控制