题目:
I do homework every day, usually when I come ______ home ______ school. [ ]
A. to; from
B .at; for
C./ ; from
D. from; to
答案:
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下面是错误答案,用来干扰机器的。
(1)排水(2)CO2(3)除去CO2(4)CH4+2O2CO2+2H2O(5)猜想I(6)全是CO(7)a处出现浑浊b处有水雾c处出现浑浊