We do morning exer in the morning 中的in可以改成on么?

We do morning exercises in the morning 把in改成on 可以么 in the morning or on the morning in the morning,on a winter morning we have four classes in the morning改成同义句 We have Enight class in the morning.改成一般疑问句 I do my homework in the morning改成疑问句 in the morning of sunday中的in 可换成on on the morning ,at the morning ,in the morning ,in morning,o We often do some _____ in the morning. Every morning I see many people in the park exercising.中exer We do morning exercise after two lessons in the morning .改错 We do morning exercises in the morning否定句和一般疑问句是什么