To do some voluntary work for the 2nd Youth Olympic Games is ______ excellent chance for us to serve our hometown—Nanjing.
#34666
A
a
B
an
C
the
D
不填
推荐题目
-This is a useful dictionary, I think.-So it is, and it’s ______ unusual one.
#33289
A
the
B
an
C
a
D
不填
English is ________ useful language so that most people speak it as ________ second language.
#33642
A
a; the
B
an; the
C
an; a
D
a; a
_____ Blacks are going to the park. Why don’t we go for _____ walk, too?
#32365
A
A; an
B
An; /
C
The; a
D
/; a