Though my grandpa is 60, he’s full of ______ energy and like a young man.A. a B. 不填 C. an
There’s no need for you about him, he can look after himself.
I don’t know how to begin a talk with Betty. She sits there all day ______ a word.
Don’t your homework at home, or the teacher may be angry with you.
Mary’s ______ sister is four years older than her.
My sister didn’t watch the movie, did I.