It’s8o’clock.Mymotherisreadingabook.MysisterandI

問題詳情：

It’s 8 o’clock. My mother is reading a book. My sister and I _____.

A. is doing my homework    B. am doing my homework

C. are doing our homework

【回答】

C

知識點：動詞時態

題型：選擇題