摘要： 答案:they 解析:该空在句中作主语且代指前面的people.故填they
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With his attention________on the shops along the roadside，he knocked an old man down while riding to school.
A concentrating B．concentrated C．to concentrate D．concentrates
答案 B
解析 考查词组，故选B项。
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_______ Paris, they called at the wine shop of Monsieur Defarge．
[ ]
A．As soon as they arrived B．On reaching in
C．On their arrival in D．At their arriving
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We ______ they will come to attend the meeting．
[ ]
A．are not sure about B．are not sure whether
C．are not sure D．don' t sure whether
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