I have piano lessons twice a weeek,句子中的lessons可不可以换成lesson?

I have piano lessons twice a weeek,句子中的lessons可不可以换成lesson? we have piano lessons.反问句 I have to go to the Children's Palace to ______ the piano lessons 英语语法问题oI have to have a piano lessons every day.主语：I谓语have to + have 宾语 piano lessoms为什么谓语是have to have,宾语只是piano lessoms不包括every day. My sister and i don't have piano lessons twice aweek.谁是主语?这句子还能怎么改? I have English lessons in the morning and piano lessons in the afternoon这是回答 那提问能怎么写 上钢琴课 have a piano lesson have piano lessons 那个可以?还可以怎么说? I have my swimming lessons. I have my drawing lessons. I have no lessons today piano,brother,take,and,to,going,I,my,lessons,are I want to take piano lessons,but Mary thinks_____(different). From Monday to Friday,I have to piano lessons.So I ____ watch TV in Saturday.A.always B.never C.sometimes 短语 上钢琴和舞蹈课 have dance and piano lessons 还是have dancing and pianoing lessons 还是其他? I hope we have more English lessons. I have a sister who plays piano. I gave up the piano lessons because I have so much homenwork to do ,but it'____my own wishes.A.in B.on C.for D.against选哪个?为什么D不对?解释本句意思. I have seven lessons every day(用Ben替换I)