Is Mike writing a e-mail now?这句句子哪错了?

Is Mike writing a e-mail now?这句句子哪错了? He is writing an e-mail now Wang Bing is writing an e-mail to his friend now.用often替换now Helen is writing an e-mail to her friend now.用often替换now is,an,writing,father,e-mail,my writing my an mother e-mail is she is writing ___ e-mail. writing,he,an,e-mail,study,the,in,is 这几个单词连词成句 my father is writing an e-mail.问句是什么 Dad,an,writing,is,e-mail连词成句 friend Jack writing an his to is e-mail Joe is writing a poem now.[祈使句]