The famous musician, as well as his students, ____ to perform at the opening ceremony of the 2012 Taipei Flower Expo.
| A．were invited | B．was invited |
| C．have been invited | D．has been invited |
______ along with host families, I believe, language travel students are likely to get enough language practice.
| A．Stay | B．Having stayed |
| C．Staying | D．To stay |
Today we have chat rooms, text messages and email, but we seem _______ the art of communicating face-to-face.
| A．losing | B．to be losing |
| C．to be lost | D．having lost |
_________ to too much sunlight will do harm to your skin.
| A．Having exposed | B．Being exposed |
| C．To be exposed | D．Exposed |
（）There is no greater pleasure than lying on my back in the middle of the grassland, _____at the night sky.
| A．to stare | B．staring |
| C．stared | D．having stared |
__________ the program , they have to stay there for another two weeks.
| A．Not completing | B．Not having completed |
| C．Not completed | D．Having not completed |