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模拟演练：
1．My brother was very ill, so _________________ (我只得把医生请来) in the middle of the night.
2. Don’t you know it’s the first time _____________________(他参加这种会议)
3．You should ____________________(留心任何一点变化) in the patient while the doctor is away.
4. _________________________ （他是否是工作的合适人选）is still a controversial issue.
5. In previous times, _____________________ （当鲜肉供应不足时）， pigeons were kept by many households as a source of food.
答案：
1. My brother was very ill, so I had to call the doctor (我只得把医生请来) in the middle of the night.
(本题考查have to 的用法，意为“只好，不得不”，表示客观的需要)
2. Don’t you know it’s the first time he has attended this kind of meeting. (他参加这种会议)
(本题考查时态，在“It is the time that”结构中，that引导的分句要用现在完成时)
3. You should keep an eye on the slightest changes (留心任何一点变化) in the patient while the doctor is away.
(本题考查动词短语：keep an eye on，意为“留心，注意”)考试大
4. Whether he is the right person for the job（他是否是工作的合适人选）is still a controversial issue.
(本题考查名词性从句的用法，whether引导名词性从句，意为“是否”)
5. In previous times, when fresh meat was in short supply（当鲜肉供应不足时）， pigeons were kept by many households as a source of food.
(本题考查固定词组“be in short supply”,意为“不足的，缺乏的”)
n. 补给，供给，供应，贮备
vt. 补给，供
