---Can I tell my best friend about it? ---No. I don’t want anyone else to know.
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---Can I tell my best friend about it?
---No. I don’t want anyone else to know.You _________ let it out.
| A．mustn’t | B．won’t | C．don’t have to | D．don’t need to |
试题答案
【答案】
A
【解析】略