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7In the 18th century writers___hours in coffee houses,discus

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7In the 18th century writers___hours in coffee houses,discussing the news of the day.
Aused to spending Bused to spend.Cwere used to spend.
7In the 18th century writers___hours in coffee houses,discus
used to + do:"过去常常"表示过去习惯性的动作或状态,但如今已不存在.
be used to + doing:对……已感到习惯,或"习惯于",to是介词,后需加名词或动名词.
be used to 是被用于..
所以是B