Had the government limited the sales of cars much earlier, traffic jam and pollution _______so serious now．
| A．has not been | B．would not be |
| C．had not been | D．wouldn't have been |
It seems that Jenny is a(n)______lady, for she always works more than 12hours a day.
| A．confident | B．sensitive | C．lively | D．energetic |
--Did you listen to Mr. Jackson’s lecture?
--Yes, I have never heard a _______one.
Jim apologized for ______ to inform me of the change of the plan.
| A．his being not able | B．his not being able | C．him not to be able | D．him to be not able |
Great changes ______ in my school in the past ten years.
| A．took place | B．were taken place |
| C．have taken place | D．have been taken place |
________ you interrupt now? Can’t you see I’m on the phone?
_ Sorry, Sir, but it’s urgent.
| A．Can | B．Should | C．Must | D．Would |