Does they have a computer?错在哪了?

Does they have a computer?错在哪了? Does they have a conputer?（哪错了） Do they have a computer?Does he have a tennis racket?Does sh Does she have a computer? does,have,Tom,a,computer,not（连词成句） they have a good time on "Does she has a computer"哪错了 does a computer have a kevbourd 判断句子对不对：Does she have a computer?请问这个句子对不对呢?如果错了,又错在哪里呢?和has Does she have a new computer? Does you have a computer?肯定回答 Does she have a computer?答：__________ Does she has a computer?这句话哪里错了?