Задайте 5 вопросов (спец,общ,альтр,хвостик,общ):
Bob had to go to dentist

Ответы

Ответ дал: perevoznyukv
1
Bob had to go to dentist.
1 Did 
Bob have to go to dentist?
Did Bob have to go to dentist or to vet?
3 Who had to go to dentist?
4 Bob had to go to dentist, didn't he?
5 Whom did Bob have to go to?
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