by a greater demand for green products, the food company has set higher s

题型：不详难度：来源：

by a greater demand for green products, the food company has set higher standards to ensure the quality.

A．Driven

B．Being driven

C．To drive

D．Having driven

答案

解析

略

举一反三

. ---Why are they taking all the equipment away?
---The job ____, they are packing up to leave.

A．done

B．being done

C．was done

D．having done

题型：不详难度：| 查看答案

-- Do you have anything to_____?
--- No, you can have a rest.

A．type

B．to be typed

C．typing

D．typed

题型：不详难度：| 查看答案

18．---I can’t recite the poem．
---Well, you are supposed _____ it many times yesterday evening．

A．to read

B．to have read

C．reading

D．having read

题型：不详难度：| 查看答案

Mr Jones, a professor, ___________ for his excellent lectures, is popular with his students.

A．known

B．knowing

C．to be known

D．having known

题型：不详难度：| 查看答案

Since 1994, the glacier in Antarctica has lowered by as much as 90cm, ______________sea level to rise.

A．having caused

B．causing

C．caused

D．being caused

题型：不详难度：| 查看答案