单选题：You ________ yesterday if you were really serious about the

题目内容：

You ________ yesterday if you were really serious about the job. A．ought to come
B．ought come
C．ought have come
D．ought to have come

参考答案：【答案仅供学习，请勿对照自行用药等】

答案解析：

When I had a problem she listened to me and suggested solut

When I had a problem she listened to me and suggested solutions. She was really

分类：英语题型：单选题

(2012年)人类进行物质资料生产应当具备的基本要素包括（　　）。 A．自然条件 B．人的劳动 C．劳动资料 D．劳动对象 E．生产关系

分类：英语题型：单选题

根据下面内容，回答题： One day, a poor boy who was selling goods from door to door to pay

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There is a computer system _________ the company is experiencing problems.A．wit

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The development of the light bulb _________ partly as a result of the widesprea

分类：英语题型：单选题