---- How do you usually go to school, Mary?----I usually go to school _______ a bus.
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
run out (of) A.用尽,耗完 B.离开 C.试用