Допишите предложения с предлогами in, at, on. i go to school on monday. breakfast is at seven oclock

1.you are a highly qualited engineer _ ?   c)aren't you     2.there are _ computers next to manager's desk c)-       earth is round,we all know that b)the

February 14, 1876, alexander  graham  bell (1847-1922), professor of physiology  ofspeech  at boston university, has patented  his invention  in the u.s.  - the phone.if we talk about  the specific purpose  of the inventor, it  appeared,  as they say,  by accident.  but the idea of  creating  the usual  phone  for all of us  were not born  in a vacuum.    

can i play with you?

yes, of courыe,you can play with me.

 

should we do it?

yes, we should do it.

 

must we translate this text?

yes, we must translate this text.

 

may she take his pen?

  yes, she may take his pen.