I was busy yesterday. I __________ (prepare) for the exams.
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I didn’t know you __________ (wait) for me.
He ___________ (do) his homework yesterday.
She often __________ (wear) a blue coat when she was in middle school.
1.中国倡导共建“一带一路”，要打造政治互信、经济融合、文化包容的（）
A. 利益共同体
B. 经济共同体
C. 命运共同体
D. 责任共同体
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