It was necessary that we___everything ready ahead of time.
A.make
B.made
C.have made
D.had made
A.make
B.made
C.have made
D.had made
The advertising man ______ .
A.feels the factory girl should earn more than him
B.envies that factory girl
C.feels work in a factory is not worth doing at all
D.is satisfied with his wage
NASA can tell that vegetation is growing back because of______.
A.a bright, white light that is reflected
B.little tiny trees that are growing
C.vegetable gardens that are planted
D.a light, pinkish view from space
According to the passage, which of the following is TRUE?
A.Spiders were the first life that could live on the island.
B.The island is far away from any piece of land.
C.Insects could not live on the island without plants.
D.Plants were brought to the island by human beings.
In the last paragraph,the author mainly intends to
A.list the necessary changes we ought to make
B.advise US to make any necessary changes
C.explain what changes can bring
D. explain the process of making changes
A.That is
B.It is
C.There is
D.This is
It is necessary that a person______exercises everyday if he wishes to be healthy.
A.do
B.does
C.did
D.must do
A.错误
B.正确