I really appreciate ____ to help me with my maths, but I’m afraid that I have no time this week．
| A．you to offer | B．it you offer |
| C．your offering | D．this you are offering |
If it were not for the fact that she_______sing, I would invite her to the party.
| A．couldn’t | B．shouldn’t | C．can’t | D．might not |
__________ fired, your health care and other benefits will not be immediately cut off.
| A．Would you be | B．Should you be | C．Could you be | D．Might you be |
—How’s your tour around the North Lake? Is it beautiful?
—It ________ be, but it is now heavily polluted.
| A．will | B．would | C．should | D．must |
John promised his doctor he _____ not smoke and he has never smoked ever since.
| A．might | B．should | C．could | D．would |
According to the air traffic rules, you ___ switch off your mobile phone before boarding.
| A．may | B．can | C．would | D．should |