Since they haven't seen each other much,but we've kept writing to each other这句话后半句的we've 我感觉应该用一般过去时啊,

I haven't met him since 1999.=It's ( ) years since I ( ) him. They've They haven’t They haven't seen each other since three months ago 同义句 -few of them have met each other since they moved to difficult cities,have they?-_____,they get together every spring festival Ayes,they have Bno,they have Cyes,they haven't Dno,they haven't Few of them have read English since they failed in the exam,_______?为什么填haven't they呢? haven't they 的翻译 they haven't slow down It’s a long time since we met last.(保持句意) We haven't seen each other____ ____ . it's a long time since we met lastWe haven't seen each other ( )( )【同义句转换、两个空 What's the matter______ they still haven't answered the telegram?填了that, The students have to follow the teacher's advice,haven't they改错 They haven't heard from Jim's letter for a long time.(改错) i( ) from him since he leftA didn't receiveB haven't gotC haven't heard为什么? 过去完成时的问题They haven't read today's newspaper yet.针对today's newspaper 如何提问可以说是 1.What haven't they read yet?2.What have they not read haven't是否可以当助动词They haven't read today's newspaper yet.针对today they haven’t packed their suitcast They haven't got any l they haven't any stationary什么意思 they haven't got to leave改错