Mary is one of the girls who ______ always on time.
| A．is | B．am | C．are | D．was |
John sold the camera yesterday which his brother him as a birthday present from Japan.
| A．has sent | B．had sent | C．was sending | D．would send |
The Chinese government has been in close contact with the authorities of HKSAR in dealing with the accident________ more than thirty people were killed .
| A．where | B．when | C．which | D．why |
You are always making noises! Why must you be so annoying while the latest sports news ____ on the radio!
| A．is broadcast | B．was broadcast |
| C．has been broadcast | D．is being broadcast |
—Your colleague is speaking English with fluency.
—It's no wonder．She ____ in the UK for a year as a visiting professor．
| A．worked | B．has worked | C．had worked | D．has been working |
_______ to sunlight for too much time will do harm to one’s skin, so you should make it a rule to get your skin creamed before going out in summer.
| A．Exposed | B．Having exposed | C．Being exposed | D．To expose |