When he was out of ___work, he was involved in crimes of violence and was put in ___ prison at last.
| A．the; the | B．/; / | C．a; / | D．/; the |
We _______on our project day and night in the past two weeks.
| A．had worked | B．have worked | C．will be working | D．has been advised |
It is important to know about the cultural differences thatcause problems.
| A． | must | B． | dare | C． | need | D． | may |
Ernest visited the South Pole because he wanted to see one of the _______regions in the world.
| A．colder | B．coldest | C．more coldly | D．most coldly |
It is said that two man-made structures are clearly visible from space. One is the Great Wall of China, andis Japan's Kansai International Airport.
| A． | another | B． | other | C． | the other | D． | either |
We’re planning to send out a thousand invitations_______Expovolunteers.
| A．over | B．in | C．on | D．to |