单选题：On reaching the top floor I suddenly realized that I _______

题目分类：公共英语二级
题目类型：单选题
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On reaching the top floor I suddenly realized that I _________my book on the service desk. A．[ A ]leaves
B．[ B ] left
C．[ C ] had left
D．[ D ] was left

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When did Dr. Huber become interested in piano?

分类：公共英语二级题型：单选题

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第46题的正确答案是_____________.

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Which is the largest one of all the planets?

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Comprehensive schools can satisfy all levels of academic abi

Comprehensive schools can satisfy all levels of academic abilities.

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介绍新药，编写《医院药讯》等必须使药物信息（　　）

分类：公共英语二级题型：单选题

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