皮皮学，免费搜题
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【单选题】
It was recommended that they______for the doctor.A.
has waited
B.
waited
C.
should wait
D.
should have waited
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】a feeling of liking or wanting someone or something more than someone or something else
A.
decision
B.
product
C.
preference
D.
program
【简答题】someone or something that has the same job or purpose as someone or something else in a different place
【简答题】v. to connect someone or something in your mind with someone or something else
【简答题】n. someone or something that has the same job or purpose as someone or something else in a different place
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