IV. 补全句子
1. 无论你借哪本书，一周内必须归还。
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2. 无论谁敲门，都不要开。
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3. 无论何时你来看我，你都受欢迎。
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4. 假若下起雨来，我们又没处避雨可怎么办?
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5. 万一我生病不能工作的话怎么办？
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6. 我饿的时候无法集中精力。（concentrate）
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7. 她需要好好休息，我们最好不要打扰她。（leave）
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8. 他们一到该城镇就外出察看周围环境。（explore）
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9. 我在盼望着你下周光临。（look）
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10. 他们在修订一部词典。（revise）
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1. No matter which (whichever) book you borrow, you must return it in a week.
2. No matter who (whoever) knocks, don’t open the door.
3. No matter when (whenever) you call on me, you are always welcome.
4. What if it rains when we can’t get under shelter?
5. What if I should fall sick and not be able to work?
6. I can’t concentrate when I’m hungry.
7. She needs a good rest and we’d better leave her alone.
8. As soon as they arrived in the town they went out to explore the surroundings.
9. I’m looking forward to your visit next week.
10. They are revising a dictionary.