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 |