---What useful book it is! --- Yeah, it tells you how to play the guitar.
A. an B. a C. the D. /
Peter, honest boy, bought useful dictionary in the store yesterday.
A. a; a B. an; an C. a; an D. an; a
Every morning he spends hour doing exercise, then he goes to work.
A. an; \ B. a; a C. a; \
–Who is boy playing soccer over there?
-He is my classmate, Li Ping.
A. a B. 不填 C. the
There is _______ umbrella behind the door.
A. a
B. an
C. the
D. 不填
---My daughter seldom has breakfast.
---It’s ________unhealthy habit. Breakfast is very important to health.
A. a B. an C. the
