What a pity! I ______ in Hong Kong for three more days, but something urgent needed to be handled back home.
| A．must have stayed | B．could have stayed | C．may have stayed | D．needn’t have stayed |
_____is our belief that improvements in health care will lead to a stronger , more prosperous economy.
| A．As | B．It | C．This | D．That |
The manager_____ the workers how to improve the program since 9 a.m.
| A．has told | B．is telling | C．has been telling | D．will have told |
______ I always felt I would pass the exam, I never thought I would get an A.
A. While B. Once C. If D. Until
--- Shall we go to the art exhibition right away?
---______.
| A．It’s your opinion | B．I don’t mind |
| C．It’s all up to you | D．That’s your decision |
Some people’s lack of basic morals is turning our society into one ______ those in need will be unable to expect help from others.
| A．which | B．what | C．where | D．that |