---Can I tell my best friend about it?

---No. I don’t want anyone else to know. You _________ let it out.

–Can I tell my best friend about it? –No, I don’t want anyone else to know. You ___ tell anyone.

   A. won’t                B. mustn’t         C. don’t have to       D. don’t need to

--- Can I tell my best friend about it?

--- No,I don't want anyone else to know it．You ________ keep it to yourself．

1. A.
   can
2. B.
   need
3. C.
   must
4. D.
   may

---Can I tell my best friend about it?
---No. I don’t want anyone else to know. You ______ let it out.

1. A.
   mustn’t
2. B.
   won’t
3. C.
   don’t have to
4. D.
   don’t need to

--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

---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

---Can I tell my best friend about it?
---No. I don’t want anyone else to know. You _________ let it out.

 ---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

－Can I tell my best friend about it?

－No. I don't want anyone else to know. You ________ tell anyone.

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