Huge solar mirrors are put in orbit around Mars to（）the polar ice－caps.

单项选择题In Africa，there were tribes which （）stretching the ear lobes.

A.went in for
B.went for
C.went
D.went to

单项选择题Since the beginning of history, people have（） travel.

A.dreamed
B.dreamed for
C.dreamed of
D.dreamed with

单项选择题His stupid remarks （）a fight.

A.touched down
B.touched on
C.touched off
D.touched up

单项选择题What’s （）in the bone will come out in the flesh.

A.bred
B.inserted
C.raised
D.broken

单项选择题Several people were（） in a blazing bus which overturned and burst into flames late last night.

A.burnt to die
B.burning to die
C.burning to death
D.burnt to death