With doubts _______ through my mind, I felt it necessary to carry out a research.
| A．to run | B．run |
| C．running | D．having run |
Since he graduated from university, he ____ a job but he hasn’t got one so far.
| A．is looking for | B．has looked |
| C．has been looking for | D．had looked |
____ the tomb, his bird was eaten by a snake.
| A．As soon as entered | B．When entering into |
| C．On entering | D．Upon entered |
Some people say jogging is good; ____ believe jogging does harm to people’s health.
| A．the others | B．others | C．other | D．another people |
If ____, the dirty air will lead you to fall ill.
| A．breathe in | B．you to breathe in | C．breathing in | D．breathed in |
In September 1997, the government of Yunnan Province claimed that Zhongdian is ____ Shangri-la is in Hilton’s story.
| A．in which | B．when | C．what | D．where |