— Would you allow me ________ here?
— Sorry. We don’t permit _________ in the lab.
| A．smoking; smoking | B．to smoke; to smoke | C．smoking; to smoke | D．to smoke; smoking |
Tom __________ into the house when no one __________.
| A．slipped; was looking | B．slipped; had looked |
| C．had slipped; looked | D．was slipping; looked |
They asked me to have a drink with them. I said that it was at least ten years since I __________ a good drink
| A．had enjoyed | B．was enjoying |
| C．enjoyed | D．had been enjoying |
Mr. Green __________ for more than ten years.
| A．died | B．has died |
| C．is dying | D．has been dead |
By the time he was twelve, Edison __________ to make a living by himself.
| A．would begin | B．has begun |
| C．had begun | D．was begun |
I can’t tell you _____ way to the Wilsons’ because we don’t have _____ Wilson here in the village.
| A．the; a | B．a; / |
C．a; the | D．the; / |