Complete the sentences with the correct tense form (the future perfect or the future continuous) of the verbs in brackets.

1. by 2250, most people (visit) the moon. 2. within the next ten years, nobody (work) in an office. 3. within the next fifty years, many places will regular (suffer) from 4. thousands of animals and plants (become) extinct by the end of the decade. 5. within the next twenty years, sea levels (rise) by up to a metre. 6. fairly soon we'll (use) renewable energy. 7. by 2050, aids (kill) more than five million people. 8. before the end of the century, nobody (live) on the planet's surface.​

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