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by, about, on, in, from, up, to, down.

1)    My grandparents are rather old – are my parents rather old? Yes, they are. – My grand parents aren’t rather old.

2)    The library is in room 703. – is the library in room 703? Yes, it is. – The library isn’t in room 703.

 3)    Peter and Andrew are in group 7. – Are Peter and Andrew in group 7? Yes, they are. – Peter and Andrew aren’t in group 7.

 4)    It is ten by my watch. – Is it ten by your watch? Yes, it is. – It isn’t ten by my watch.

 5)    Mr. Black is on business. – Is Mr. Black on business? Yes, he is. - Mr. Black isn’t on business.

 6)    I am fond of travelling. – Are you fond of travelling? Yes, I am. - I am not fond of travelling.

 7)    The secretary is very busy now. – Is the secretary very busy now? Yes, he is. -  The secretary isn’t very busy now

 8)    These engineers are Russian. – Are these engineers Russian? Yes, they are. - These engineers aren’t Russian

1)    My grandparents are rather old – are my parents rather old? Yes, they are. – My grand parents aren’t rather old.

2)    The library is in room 703. – is the library in room 703? Yes, it is. – The library isn’t in room 703.

 3)    Peter and Andrew are in group 7. – Are Peter and Andrew in group 7? Yes, they are. – Peter and Andrew aren’t in group 7.

 4)    It is ten by my watch. – Is it ten by your watch? Yes, it is. – It isn’t ten by my watch.

 5)    Mr. Black is on business. – Is Mr. Black on business? Yes, he is. - Mr. Black isn’t on business.

 6)    I am fond of travelling. – Are you fond of travelling? Yes, I am. - I am not fond of travelling.

 7)    The secretary is very busy now. – Is the secretary very busy now? Yes, he is. -  The secretary isn’t very busy now

 8)    These engineers are Russian. – Are these engineers Russian? Yes, they are. - These engineers aren’t Russian