Mr. Bo _____ for half a month. He’ll come back in two months.
She’s never spent much money on her own clothes, ______ she?
- Do you mind coming to see me tomorrow? -_______. I'd like to talk with you.
-How long may I_______ this book? -For about a week.
-Ann is in hospital. -Oh, really? I_______ know. I_______ her for a long time.
It_______ ten years since Professor Du last_______ to the earth.