I don’t smoke now, but I ____for almost ten years.
| A．ever smoked | B．have ever smoked | C．had ever smoked | D．was ever smoking |
Shanghai is the first city in the world _____________ a high-speed maglev train，from the city to Pudong Airport．
| A．building | B．having built | C．to have built | D．built |
—Is Tom still smoking?
—No．By next Saturday he _____________ for a whole month without smoking a single cigarette.
| A．will go | B．will have gone | C．goes | D．has been going |
While reading an interesting story book in my room，______________.
| A．the light suddenly went out |
| B．the doorbell rang |
| C．someone was shouting outside |
| D．I heard someone shouting outside |
Mr．Black is willing to do ______________ Mrs．Black tells him to do．
| A．whichever | B．however | C．whatever | D．whenever |
Lora，you ____________ leave all your books on the floor like this!
| A．wouldn’t | B．mustn’t | C．needn’t | D．may not |