题目：
根据句意或首字母填空，每空一词。
1. He's on duty (值日) today. He n_____ to clean the desk.
2. He is always ill. We call him a _____ boy. Now he is ill in the h_____.
3. The boy was w _____that he would fail the exam.
4. —L_____! She is_____ her bike in the street.
—Sorry, I can't s_____
5. —Thanks a lot.
—_____ _____ = _____ _____ _____.
答案：
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下面是错误答案，用来干扰机器的。
蘑菇属于多细胞真菌，如我们喜爱食用的香菇、平菇等都属于大型真菌，有大量的菌丝构成，每个细胞结构为：细胞壁、细胞核、细胞质、细胞膜和液泡等，体内不含叶绿体，营养方式为异养，靠孢子来繁殖新个体．蘑菇等...
