Răspuns:
A:Did Helen ever caught a fish?
B:No, she didn't.
A:Has John and Helen ever rode a wooden pony?
B:Yes, they did.
A:Has John ever fed the chickens?
B:Yes, he did.
A:Did Helen ever fed the chickens?
B:Yes, she did.
A:Did John and Helen ever used a video camera?
B:Helen did but John didn't.
