问题

I think English is ______ useful language, and it’s also ______ important language.
A:an, a
B:a, an
C:an, the
D:a, the
B:a, an
C:an, the
D:a, the
正确答案是:
同类题型
He jumped to his feet, thinking that the planes were going to ________.
________ have you been here? —About two years. [ ]
He lives on ________ floor in that building.
Where are you going this month?We_________ go to Xiamen, but we’re not sure.
Are you in a hurry?—No, I’ve got plenty of time. I _______ wait.