Look at your face. It's dirty. You ______ wash your face.

1. A.
   must
2. B.
   have to
3. C.
   mustn't
4. D.
   don't have to

Look at that woman! She’s the woman ______ son is a famous film star.

1. A.
   which
2. B.
   that
3. C.
   whose
4. D.
   who

Look at the sign. It says“__________ entry”.

1. A.
   Don't
2. B.
   No
3. C.
   Can' t
4. D.
   Mustn't

—Look at the girl with a pair of glasses over there. Can you tell me ______?

—She is a nurse.

A. who is she　　　 B. who she is　 C. what is she　　 D. what she is

----Look at that pretty girl! Do you know _____?

----She is a dancer.

A. who she is　 B. who is she　 C. what she is　 D. what is she