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【简答题】
十八大提出，坚持节约资源和保护环境的基本国策，坚持节约优先、保护优先、自然恢复为主的方针，着力推进()、循环发展、低碳发展。 A、绿色发展 B、持续发展 C、快速发展 D、规模发展
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举一反三
【单选题】________hard before, Tom is afraid of failing in the exam.
A.
Having been worked
B.
Not to have worked
C.
Having never worked
D.
Never have worked
【单选题】_______ , the girl worked in a hurry.
A.
Having swept the room
B.
Another room swept
C.
Having another room to sweep
D.
Having another room to be swept
【单选题】Having worked for three hours or so they stopped _____ a rest.
A.
taking
B.
to take
C.
having
D.
having taken
【单选题】________ in the company for three years, Mark has become experienced in business negotiations. A) Having worked B) Have been working C) Have worked D) Worked
A.
Having worked
B.
Have been working
C.
Have worked
D.
Worked
【单选题】all day, I went to bed early.
A.
Working hard
B.
Worked hard
C.
Having worked hard
D.
To work hard
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