They / not wait / for you / if / you late /

0. I If / leave / my computer on standby / waste energy?
If I leave my computer on standby, will I waste energy?
1. they / not wait / for you / if / you late / .
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2. if / global warming / get worse / what / happen / ?
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3. if / she / save money / she / buy / a new mobile phone / .
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4. he not go / to the party if / he / fail the test / .
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5. we / not save / the planet / unless we / stop polluting the air / .
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