Are they chatting to friends online?
Yes, they are.
Does he cook breakfast? (+)
Yes, he does.
Does she do her homework? (+)
Yes, she does.
Is he listening to music? (+)
Yes, he is.
Are they cooking breakfast? (-)
No, they aren´t.
Is she playing computer games? (+)
Yes, she is.
Is it riding a bike? (+)
Yes, it is.
Is he swimming? (-)
No, he isn´t.
Are they surfing the internet? (+)
Yes, they are.
Is he surfing the internet? (-)
No, he isn´t.
Is he watching TV? (+)
Yes, he is.
Is he walking the dog? (-)
No, he isn´t.
Do they play tennis? (-)
No, they don´t.
Does it swim? (-)
No, it doesn´t.
Is it swimming? (+)
Yes, it is.
Are they playing tennis? (+)
Yes, they are.
