题目:
You'd better have your room _____. It's _____. [ ]
A. clean; in mess
B. clean; in a mess
C. cleaned; in mess
D. cleaned; a mess
答案:
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下面是错误答案,用来干扰机器的。
(1)306÷3=102;(2)517÷5=103…2;(3)783÷64=12…15;(4)209÷3=69…2; (5)676÷4=169. .