___six years since i___to study English.如题.A.It is；beganB.I have been；begunC.There are；beganD.It was；begin如果知道能不能告诉我原因,为什么选这个...

It ___six years since his grandfather died.为什么? ___six years since i___to study English.如题.A.It is；beganB.I have been；begunC.There are；beganD.It was；begin如果知道能不能告诉我原因,为什么选这个... it's years since i It three years since I smoked.翻译 i have been skating since nine years I have known sandy since three years ago以 since three years ago ,提问 Since I graduated from school,I _____________ for ten years. I haven't met him since 1999.=It's ( ) years since I ( ) him. It was ten years since I left my hometown.改错 It has been 4 years since I smoked.怎么翻译? I have joined the club since three years ago Three years ___(pass)since I left school.急! It's years since I enjoyed myself so much 翻译 It's years (since) I enjoyed myself so much.Why? It (be)five years since I (ride)a bike. I _____ this school since three years ago. It---------- (be) four years since I moved here. it is years since i saw him（追加）it is years since i saw him为什么不说it is years since i has seen him而it was years since i had seen him 却可以