My boss gets her messages______ by a computer.

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问题 My boss gets her messages______ by a computer.

选项 A、take
B、takes
C、taken
D、taking

答案C

解析 By indicates a passive form, so the past participle is required. Choice (A) is the simple form. Choice (B) is the present tense. Choice (D) is the present participle.  
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