2) - their office hours don't begin at 9 o'clock
? do their office hours begin at 9 o'clock?
3) - mr. bell isn't busy all day.
? is mr.bell busy all day?
4) - there aren't sone cables on the table.
? are some cables on the table?
5) - she can't translate some letters from english into russian.
? can she translate some letters from english into russian?
6) - he doesn't has some offers fron bell& co.
? does he has some offers from bell& co.
7) - mr. smith hadn't bought several machines from green& co by june 2005.
? had mr. smith bought several machines from green& co by june 2005?
8) - they weren't reading french newspapers yesterday at 5 o'clock.
? were they reading french newspapers yesterday at 5 o'clock?
9) - the engineers didn't meet some inspectors a week ago.
? did the engineers meet some inspectors a week ago?
10) - we haven't already received fives enquiries from blake& co.
? have we already recieved fives enquiries from blake& co?
11) - they haven't a lot of offices in london.
? have they a lot of offices in london?
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