Although the causes of cancer_____, we do not yet have any practical way to prevent it.
| A．are being uncovered | B．have been uncovering |
| C．are uncovering | D．have uncovered |
Have you seen the film Painted Skin ______ leading actor is world-famous?
| A．its | B．whose | C．of which | D．that |
________ time, he’ll make a first-class tennis player.
| A．Having given | B．To given | C．Giving | D．Given |
Education in government colleges is very cheap, but if you go to the _____colleges, it is much more expensive.
| A．private | B．personal | C．public | D．personnel |
With all the problems ________ as expected, the manager felt rather satisfied.
| A．had been settled | B．being settle |
| C．settled | D．to settled |
Not I but Tom _______ the car accident.
| A．was to blame for | B．were to blame for |
| C．was blamed for | D．were blamed for |