Her sister is a nurse, so she always wears __________ uniform when she works.

A. a             B. an              C. /                D. these

Her sister is a nurse, so she always wears __________ uniform when she works.

Her sister is a nurse, so she always wears __________ uniform when she works.

A．a                B．an               C．/                D．these

Her sister is a nurse, so she always wears __________ uniform when she works.

1. A.
   a
2. B.
   an
3. C.
   /
4. D.
   these