Dr. Ma used to two or three persons in the hospital.
| A．operate on | B．operating on | C．operate for | D．operating for |
I think it’s good _____ us _____ eat healthy food.
A. for ; to B. for; for C.to; for
—Tom liked playing football when he was young .
—_____, He plays it very well.
A. So he was B. So he did C. So did he
_____you have a talk with him ，you will know he is a good person .
A. Once B. unless C. Though
—How long may I______ the story book?
— For a week.
A. keepB. lend C. borrow
He’s never read this book before, _____?
A.is he B. was he C.has he