Wang Gang wants to be ________ swimmer but Simon wants to be ________ engineer.
#34685
A
a, a
B
a, an
C
an, a
D
an, an
--- Mary knows so much about ______earth! ---Yes, although she is only ____eight- year-old girl.
#47156
A
an; a
B
the; an
C
the; a
D
an; an
We can have ___ blue sky if we create ___ less polluted world.
#48118
A
a. a
B
a, the
C
the, a
D
the, the