It  couldn’t have been Mary that you heard shoutin...

Câu hỏi: It  couldn’t have been Mary that you heard shouting last night , as she is vacationing in Vermont at the moment

A right now, Mary is having a holiday in Vermont , so it is impossible that it was she whose shouting you heard last night.

B I think that Mary is on holiday in Vermont  now  ,  so you may be wrong in thinking that you heard her yelling last night 

C if it  was Mary that you heard yelling last night , then she can’t be taking a vacation in Vermont at the moment

D are you sure is was Mary who shouted to you last night , because , as far I know , she is on vacation in Vermont at the moment