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回答{TSE}题Human needs seem endless．They might be regarded as making up several levels．When there is enough money to satisfy one level of needs, another level appears．The first and most basic level of
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The author tends to think that the fifth level________
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By the time you arrive, I ________ working for two hours．
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Not only the switches but also the old wiring ________ changed．
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________had he arrived home than it began to rain．
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回答{TSE}题Eggs are my favorite food．I like them 21 ，hard-boiled，scrambled，or poached．I eat eggs for 22 ，lunch，and dinner．I eat eggs here，there，and everywhere!&nb