题目内容

Doctors strongly recommended that my father         more exercise regularly instead of sitting still before a computer all day long.          
A．takes B．take C．took D．had taken
B

试题分析：句意：医生强烈建议我爸爸经常锻炼而不是整天坐在电脑前面。主句的谓语是recommend，宾语从句的谓语要用虚拟语气（should do），should可以省略，所以选B。
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