before / when entering

0 «John knocks on the door when he is entering the principal's office» — this one sounds like he doesn't wait for someone in the office say "Come in!" and enters right after knocking, so whoever is inside won't have to time to quit Solitaire or ICQ...02br
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00 «He knocks on the door before entering.» — better.02br
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00 And I don't think either "now

0Ant, your 01font01b00to02b02font00really is a great marathon runner. 05002br
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00 this one sounds like he doesn't wait for someone in the office 01b01font00" "02font02b00 say "Come in!" and enters right after knocking, so whoever is inside won't have

0 «Ant, your to really is a great marathon runner.»02br
00 ???02br
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00 That part should be: «...will have no time...» or «...won't have time...»02br
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00 «By the way, I interpret the 'when' as 'AS' . Do you agree with me?»02br
00 I also incline to this. 0-

0Don't you think a 'to' is missing?02br
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00sounds like he doesn't wait for someone in the office [to] say ...02br
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00Won't have [to] time to quit Solitaire.02br
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00The front part is missing a 'to' and the later part has02br
00an extra 'to'02br
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00What do you think? teleportation?0-

0 «What do you think? teleportation?»02br
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00 Yes. 0-

0How do I correct (a) and (c) ? 0-