We spend about an hour a day .[ ]A. do our homework B. doing our homework C. do our homeworks D. doi

题目简介

We spend about an hour a day .[ ]A. do our homework B. doing our homework C. do our homeworks D. doi

题目详情

We spend about an hour a day              .
[     ]
A. do our homework
B. doing our homework
C. do our homeworks
D. doing our homeworks
题型:单选题难度:中档来源:同步题

答案

B

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