30. The No. 5 subway line, ______in October, 2007, has greatly improved the traffic conditions in Beijing.
| A．opened | B．was opened | C．being opened | D．to be opened |
A British scientist has predicted that parents who lose children in accidents may be able to clone “copies” to________ them within 50 years.
| A．take place | B．take place of |
| C．take the place of | D．in place of |
________warm atmosphere in our English class has left________deep impression on all the people present.
| A．A；a | B．A；/ |
| C．The；/ | D．The；a |
－Boy，which website are you surfing on the Internet now?
－Oh，Mum...________I tell you everything I do?
| A．Must | B．Should |
| C．Can | D．Shall |
Visitors are deeply attracted by the 10，000squaremeter skiing park，________is among the biggest in Asia.
| A．that | B．it |
| C．which | D．what |
Several large musical companies are reported________with major online music providers in China at present about charging individual users for music downloads.
| A．discussing | B．to discuss |
| C．having discussed | D．to be discussing |