The chairman thought ______ necessary to invite Professor Smith to speak at the meeting.
| A．that | B．it | C．this | D．him |
—Now that you like the cell phone so much, why not carry it back?
—Well, you know, I’m a student, and I can’t afford ________ mobile phone.
| A．that expensive a | B．a that expensive | C．so an expensive | D．such expensive a |
Loulan, once a small, wealthy commercial city, is believed by many people___________over gradually by sandstorms from AD 200 to AD 500.
| A．covered | B．was covered | C．to be covered | D．to have been covered |
The blind man thought___________necessary to pay back the help people gave him when it was sunny.
| A．that | B．it | C．this | D．him |
.The Chinese language differs from many Western languages___________it uses characters which have meanings and can stand alone as words.
| A．unless | B．until | C．now that | D．in that |
.Don’t be frightened by sharks as there is___________chance of being hit by lightning than being attacked by a shark.
| A．as thirty times great as | B．as thirty times great |
| C．thirty times as great | D．thirty times greater |