meaning ?

0Dear teachers,02br
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001. Can I use both prepositions here?02br
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00Diane can’t to talk to you on/over (?) the phone because she is whashing her hair.02br
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002. What's the meaning of this sentence?02br
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00What's this covering up?00 02br
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003. What's the meaning of "blithe" here?02br
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00Don't be shy. Whether you're 01i00blithe 02i00or you just01i00 blithe02i00.02br
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004 What's the meaning of the interjection "man alive" ?02br
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00Thank you for your help.02br
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00Hela0-