by planting more trees ,we can ________ the number of greenh
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by planting more trees ,we can ________ the number of greenhouse gases in the air.
A .bring B.bring down C.go up D .go down
尽快!
A .bring B.bring down C.go up D .go down
尽快!
![by planting more trees ,we can ________ the number of greenh](/uploads/image/z/2841967-55-7.jpg?t=by+planting+more+trees+%2Cwe+can+________+the+number+of+greenh)
B.bring down
by planting more trees ,we can ________ the number of greenh
we are planting trees by the river,some are digging,some are
________ students are now planting trees in the field.
the number of the staff we can employ will be ---by how mone
Planting trees can make the soil aovid changing into sand
More and more trees need ___in the world.A.planting B.to pla
We can find trees on both sides of the river
Planting trees can help to make our e----clearer and more be
The young pioneers are planting trees by the river 变成被动语态
We are going to reduce the number of trees being cut down 去掉
We plant trees every year.The number of ______ in our hometo
If we use the new recycling method, a large number of trees