1) In the future it _________ be possible to live on other planets. (Probable) a) may b) will 2) In the future we ________ be able to travel to space (Certain) a) may b) will 3) Scientists think that in 50 years we _________ have problems finding clean water (Certain) a) will b) may 4) In the future some animals all over the world ________ be disappear. (Probable) a) will b) may

May / Will

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