---Who is at the door? ---That John.I'm sure． A．may be B．must be C．should——青夏教育精英家教网——

题目内容

---Who is at the door?

---That ____ John，I'm sure．

A．may be B．must be C．should

试题答案

1、B

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---Who is at the door?

---That ____ John，I'm sure．

A．may be B．must be C．should

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