-----Tom, I’m sorry to say that I can’t go to watch tonight’s match with you, for I have to prepare for the coming exam.
----- _______ . Have some fun!
| A．Don’t have too many irons in the fire. | B．Don’t be a wet blanket. |
| C．Don’t put the cart before the horse. | D．Don’t pull my leg. |
He paid for a seat, when he________have entered free.
| A．could |
| B．would |
| C．must |
| D．need |
________such heavy pollution already, it may now be too late to clean up the river.
| A．Having suffered |
| B．Suffering |
| C．To suffer |
| D．Suffered |
John, look at the time，________you play the piano at such a late hour?
| A．Must |
| B．Can |
| C．May |
| D．Need |
—Are you coming to Jeff's party?
—I'm not sure. I________go to the concert instead.
| A．must |
| B．would |
| C．should |
| D．might |
Mr. Bush is on time for everything. How________it be that he was late for the opening ceremony?
| A．can |
| B．should |
| C．may |
| D．must |