--- Mum, can I wear my jeans to school?

--- No, you ________ wear your school uniform. That's the school rule.

1. A.
   can
2. B.
   can't
3. C.
   have to
4. D.
   may

—Mum, can I wear my jeans to school?

—No, you _______ wear your school uniform. That’s the school rule.

A．can                 B．can’t            C．have to              D．may

(2006·寧夏回族自治區)

--- Mum, can I wear my jeans to school?

--- No, you ________ wear your school uniform. That's the school rule.

[　　]