— I saw Helen in the school just now.— It ______ be Helen. She has gone to the shopping center with her sister.

题型：单选题题类：常考题难易度：普通

2017届广西北海市九年级上期末教学质量检测英语试卷

— I saw Helen in the school just now.

— It ______ be Helen. She has gone to the shopping center with her sister.

A、needn't B、shouldn't C、can't D、mustn't

举一反三

—Pardon me, nurse. I didn't hear the bell.

—It __________ be him. He has gone to Lanzhou.

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