Rewrite the sentences: 
1. stop running or you'll feel exhausted.
-> if
-> unless
-> should
2. hoa is tired, so she can't help us.
-> if
-> unless
-> were
3. both ba and nam don't have any bikes.
-> Neither of
4. most  of those boys hate watching tv.
-> most of those boys aren't 
5. mai was sick, but she went out for games.
-> although 
-> in spite of 
-> however
-> sick
-> no matter 
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