My friend John insisted that he had seen ______ alien the day before.
#34434
A
a
B
an
C
some
D
any
推荐题目
-How long does it take us to go to your school from here?-It takes us hour or more to go to my school by bus.
#33282
A
an; a
B
a, an
C
an, /
D
a, /
