You must concentrate more ______ your English study. [ ]A. to B. in C. on D. at -九年级英语

题目简介

You must concentrate more ______ your English study. [ ]A. to B. in C. on D. at -九年级英语

题目详情

You must concentrate more ______ your English study.
[     ]
A. to       
B. in       
C. on      
D. at
题型:单选题难度:中档来源:期中题

答案

C

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