--- It’s so late. Our son______ be back!
--- Don’t worry. I dare say he ______ have some extra work to do.

--- It’s so late. Our son______ be back!

--- Don’t worry. I dare say he ______ have some extra work to do.

A．can; must         B．will; might         C．should; must       D．must; may

--- It’s so late. Our son______ be back!
--- Don’t worry. I dare say he ______ have some extra work to do.

1. A.
   can; must
2. B.
   will; might
3. C.
   should; must
4. D.
   must; may

—It’s so late. Our son ___ be back!

   —Don’t worry. I dare say he ___ have some extra work to do.

A. can; must      B. will; might       C. should; must     D. must; may

---It’s so late. Our son ________ be back!

--- Don't worry. I dare say he ________ have some extra work to do.

A. can; must     B. will; might            C. should; must     D. must; may

---It’s so late. Our son         be back!

--- Don’t worry. I dare say he        have some extra work to do.     

A．can ; must     B．will ; might           C．should ; must   D．must ; may

---It’s so late. Our son         be back!

--- Don’t worry. I dare say he        have some extra work to do.     

A．can ; must     B．will ; might           C．should ; must   D．must ; may

---It’s so late. Our son ________ be back!

--- Don't worry. I dare say he ________ have some extra work to do.

A. can; must　　 B. will; might　　 　　　 C. should; must　 　D. must; may

—It’s so late．Our son ________ be back!

—Don’t worry．I dare say he ________ have some extra work to do.

A．can; must          B．will; might            C．must; may          D．should; must