It’s _______ MP5 . It can be used to lis
题型:选择题
问题:
It’s _______ MP5 . It can be used to listen music and watch movies . It’s ________ useful invention .
A.a ; a
B. a ; an
C.an ; a
D.an ; an
It’s _______ MP5 . It can be used to listen music and watch movies . It’s ________ useful invention .
A.a ; a
B. a ; an
C.an ; a
D.an ; an