—Oh my god! You__ wear slippers to attend the conference．

—I'm sorry I forgot there is a conference．

A．must B．can  C．should   D．shall

—Oh my god! You__ wear slippers to attend the conference．

         —I'm sorry I forgot there is a conference．

         A．must  B．can     C．should        D．shall

—Oh my god! You__ wear slippers to attend the conference．

—I'm sorry I forgot there is a conference．

A．must           B．can            C．should         D．shall

—Oh my god! You__ wear slippers to attend the conference．

—I'm sorry I forgot there is a conference．

1. A.
   must
2. B.
   can
3. C.
   should
4. D.
   shall

---Oh my god! You_______ wear slippers to attend the conference．
---I'm sorry I forgot there is a conference．

1. A.
   must
2. B.
   can
3. C.
   should
4. D.
   shall