After Jack had sent some e-mails,he _______ working on his p

He s _____ some E-mails to his friends yesterday. He had just sent an e­mail to his pal on the Internet __ He has sent his friend many e-mails till now.(改为同义句) He sometimes writes e-mails to his friends.（对writes e-mails 初二英语连词成句1.e—mails,in,he,friends,some,from,his,read,China.2.f he had some chicken on his farm.同义句 i have already sent some e-mails to my pen pal;的否定句 I sent s___ e-mails to tom yesterday,but he didn't answer an 改句子：1.Jack e-mails his manager every week.改为否定句 Only after he had an operation on his heart _____ he should After working he _______ a rest 中间填什么 He had a pain _______ his back. A. on B. with C. in D. onto