George was such a good guy that he was left

A．suppose

B．for fear that

C．no matter how

D．the moment

A．there is no life there now

B．there is a large amount of water at the poles

C．the Mars may be able to support life in the future

D．conditions may have been similar to those on the Earth

A．to take

B．took

C．taking

D．have taken

A．The author will introduce a new idea

B．The author is about to avoid any conclusion

C．The author will stick to his own point of view

D．The author will give up his own point of view

A．by far

B．at random

C．in number

D．out of order

A．dozen

B．dozens

C．dozen of

D．dozens of

A．Therefore

B．Anyhow

C．Thus

D．Howeve

A．seriously

B．heavily

C．badly

D．severely

A．appear

B．appearing

C．to appear

D．appeared

A．from

B．for

C．to

D．with