He is having a birthday party.改为一般现在时 与现在进行时

He is having a good 为什么不用at birth?He is noble by birth. ____ he ___ (work)?_No ,he is having a rest. he is having a birthday party一般现在时.　　　　　　　tonight一般将来时 He is having a Music lesson(主语改为复数形式) he is having a rest under the tree he has a bath he is having a bath he had a bath He is having a good time.为什么用having而不用hasing . look!Daniel()a book in his hand and he()very happy.A.is having,looks B.is having,is looking He's having a bath 请问have已经是动车了,is可以直接去掉吗（he having a bath)为什么? Where is Mr.Read?He is in a r_.He's having dinner with his friends. 他正在上课吗是Is he having classes?还是Is he have a class?为什么打错了，第二个是Is he having a class 1.Alfred Nobel_____died at birth,is remembered and respected long after his death because of the Nobel Prize. A.who felt he should B.who felt he should He never___fun.A.have B.has C.is having D.is have where is Mr Lin?He is having a m_____ with some people in that room. With a lot of difficult problems< >,he is having a hard time. He ________ lunch with a customer now.A.has B.have C.is having He is having breakfast right now.(already)