( )1. —What’s ________ matter with you?
—I have ________ bad headache.
A. the; a       B. a; a          C. the; an     D. /; a
( )2. —Your sister speaks English well. Who taught her?
—Nobody. She taught _________.
A. her          B. hers C. herself           D. she
( )3. If you have any _______ on the train, you can call me for help.
A. difficulty           B. pressure 
C. skill                       D. stress