It is hoped that an end can _______ to pollution ofany kind and we humans can live ______ with nature.

Only by hard work _________ learn English well.

We are not sure if it ___________tomorrow. If it _________, we won’t go hiking.

I can’t remember how the tune goes, ______ I’ll recognize it when I hear it

(2013·辽宁六校高三联考)I told Mom that not everyone could manage to have 3 meals on time everyday, ________？