摘要： Stop cutting trees, the earth will become worse and worse. A. and B. but C. or D. then
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Stop cutting trees, _____ the earth will become worse and worse.
[ ]
A. or
B. and
C. but
D. then
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B. and
C. but
D. then
Stop cutting trees, _________ the earth will become worse and worse．
[ ]
A．
or
B．
and
C．
but
D．
then
Stop cutting trees, _________ the earth will become worse and worse.
[ ]
A. and
B. then
C. but
D. or