2. 外语
  3. Paul couldn’t sleep last night. He【16】early and sat up, and then he,【17】down again. He felt terrible. "I must be sick," he thoug

Paul couldn’t sleep last night. He【16】early and sat up, and then he,【17】down again. He felt terrible. "I must be sick," he thoug

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问题     Paul couldn’t sleep last night. He【16】early and sat up, and then he,【17】down again. He felt terrible. "I must be sick," he thought, "but I must study for that test."
    He got up and looked for his history notebook: He finally【18】it on his chair. He【19】the history notes, but he couldn’t remember any of the facts in his notes. "What shall I do?" he thought. He felt terrible. Just then Paul’s telephone rang, so he【20】his notebook and【21】the telephone. "Good morning," Jack’s voice said. "You【22】be wrong about that test."
    "What do you mean?" Paul asked weakly.
    "We are not going to【23】a test today," Jack said. "I wrote down the【24】in my notebook. The test will be held next Wednesday; it isn’t today. How do you【25】this morning?"
    "Fine," said Paul. "Just fine!" Suddenly he really felt fine.
选项 A、must
B、can’t
C、have to
答案A
解析 must表推断时，只用于肯定句，不能用于否定句和疑问句，意为“想必，准是，一定”，语气较肯定。can’t是“不可能，一定不”，用于否定判断。have to是表示“(客观上)不得不，必须”。
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