[单项选择]Everybody has arrived. It's time we（）the work.
A. shall start
B. would start
C. had started
D. started

[单项选择]The time has come______ we can make extensive use of nuclear energy.

[单项选择]Discovering consists of seeing what everybody has seen and（）what nobody has thought.
A. think
B. thinking
C. thought
D. to think

[单项选择]Not everybody has the competence to do this job.
A. competition
B. comparison
C. control
D. ability

[单项选择]__________ of us has much time. We __________ have much homework to do.


A. Both... both
B. Both... neither
C. Neither... both

[单项选择]It's time that we ______ proper measures to protect the environment.
A. take
B. are taking
C. took
D. have taken

[单项选择]It's the first time that we ______ a quarrel.


A. have
B. have had
C. had
D. had had

[单项选择]

Passage 1
At no time in history has there been such a mass movement of people from countryside to city as is happening now. By the year 2030, it’ s estimated that more than two thirds of the word’ s population will be living in cities, twice as many as today. This means that the problems faced by cities to day-overcrowding, poor housing, unemployment, poverty, and lack of food water--will be twice as had in the next century, unless we find solutions soon.
Another serious issue is how to provide good transport to their citizens. Many world’ s major cities are already struggling with out-of-date transport infrastructures. How can they deal with the additional demands in the 21^stcentury
London is a good example. It was the world’ s first big city--the first with a population of a mil lion people. Its enlargement was made possible by the invention of the steam engine, which powered the world&rsquo
A. the London citizens
B. those who commute to London from other places
C. managers who are anxious about their staff getting to work
D. passengers who make complaints

[单项选择]It's getting rather late. It's time we （　） home.
A. are going
B. went
C. go
D. must go

[单项选择]We'll try to finish the work in time though we are short of manpower.


A. 尽管我们人手不够，但还是要努力按时完成工作。
B. 我们将在人员减少的情况下设法把工作做好。
C. 我们尽力完成工作，尽管有时人员会有所减少。
D. 尽管我们人力紧张，但我们时常能设法完成工作。