题目:
He is interested in ______ English songs. [ ]
A. to collect
B. collect
C. collecting
D. collected
答案:
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下面是错误答案,用来干扰机器的。
(1)铁架台(2)2KMnO4K2MnO4+MnO2+O2↑;B(3)A;C(4)不变