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填空题
A telephone user may pay a fixed monthly charge and (allow) ____ to make an unlimited number of local calls in the month.
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解析：
本题考查被动结构的用法。句意：电话用户只要每月支付固定的费用就可以被允许无限量的打市话。动词allow与主语a telephone user是逻辑上的动宾关系，表达的是“被允许”，and前后并列动词时态应该保持一致，故填入is allowed。
本题考查被动结构的用法。句意：电话用户只要每月支付固定的费用就可以被允许无限量的打市话。动词allow与主语a telephone user是逻辑上的动宾关系，表达的是“被允许”，and前后并列动词时态应该保持一致，故填入is allowed。
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