试题 试卷
题型：单选题 题类：模拟题 难易度：普通
陕西省西安市西北工业大学附属中学2017届九年级下学期英语第一次适应性训练考试试卷
—Two.
—Once a week.
— Twice a week. We clean their rooms and do some shopping for them.
— The river can provide us with a lot of fresh water.
—She is from the US.
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