Peter couldn't concentrate____ what he was doing while his family were watching TV.[ ]A. onB. t

题目简介

Peter couldn't concentrate____ what he was doing while his family were watching TV.[ ]A. onB. t

题目详情

Peter couldn't concentrate____ what he was doing while his family were watching TV.     
[     ]
A. on          
B. to          
C. in          
D. for
题型:单选题难度:中档来源:同步题

答案

A

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