一道英文改句,many countries have made new laws.they went to fight pollution.many countries have made new laws so fight pollution.问号为两个填空

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一道英文改句,many countries have made new laws.they went to fight pollution.many countries have made new laws so fight pollution.问号为两个填空
一道英文改句,
many countries have made new laws.they went to fight pollution.
many countries have made new laws so fight pollution.
问号为两个填空

一道英文改句,many countries have made new laws.they went to fight pollution.many countries have made new laws so fight pollution.问号为两个填空
as to (so as to为了,目的是).

they can

as to