______a nurse, she knew how to take care of a patient.A．Been B．Being C．To be D．

题型：不详难度：来源：

　______a nurse, she knew how to take care of a patient.

A．Been

B．Being

C．To be

D．Be

答案

解析

略

举一反三

The monkey was so lucky that it just missed ______ .

A．catching

B．to be caught

C．being caught

D．to catch

题型：不详难度：| 查看答案

．Doctors and medical supplies to the scene of the accident immediately it happened .

A．have rushed

B．were rushed

C．were rushing

D．rushed

题型：不详难度：| 查看答案

Nobody could have guessed, in those days, the place in history that Martin Luther King, Jr ____.

A．was having

B．was to have

C．had had

D．Had

题型：不详难度：| 查看答案

—When will Mother come back?
—She _____ to be here by eight o’clock tonight.

A．is supposing

B．supposed

C．was supposed

D．is supposed

题型：不详难度：| 查看答案

In the past few years, Chinese scientists ________ great success in the field of space flight.

A．achieved

B．have achieved

C．won

D．had won

题型：不详难度：| 查看答案