-Nobody but John and Tom still in the lab as I passed by last night. -What on earth they ? A. were; did; do B. was; did; do C. were; were; doing D. was; were; doing 题目和参考答案——青夏教育精英家教网—

题目内容

—Nobody but John and Tom ________ still in the lab as I passed by last night.

—What on earth ________ they ________ ?

A. were; did; do　　　　　　　　　　　　　　　　 B. was; did; do

C. were; were; doing　　　　　　　　　　　　 D. was; were; doing

答案：D
提示：

nobody是主语，but John and Tom介词短语不影响主语和谓语的数的关系，故用was；他们究竟在干什么啊？用过去进行时

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Something big is happening to the human race, something that could be called the Great Transformation.

The Transformation consists of all the changes that are occurring in human life due to advancing technology. For thousands of years such progress occurred slowly. Now everything is changing so fast that you may find yourself wondering where all this progress is really leading.

Nobody knows what all these changes will really mean in the long run. But this mysterious Transformation is the biggest story of all times. It is the story of the human race itself.

Some people worry about what will happen when the deposits(蕴藏)of petroleum are gone, but already researchers are finding all kinds of new ways to get energy. Someday, solar power collected by satellites circling the earth or fission(裂变) power produced by mankind may give us all the energy we need for an expanding civilization(文明).Space exploraton promises to open up much new land for human settlement, as well as leading to the harvest of mineral resources.

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