he___ (study) at this school since he ___(come) to this city

Tom has been at this school since he come to China.对since he Mr Smith ___ at this school since he ___ to Zhuhai. 1.Mr Smith ___ at this school since he ___ to Zhuhai. I ___(teach)Chinese in this school since I ____(come)to Nanj He ____ this school since September.A.has come to B.has been 1.He.___(teach)in this school since he___twenty We_(learn)many words since we come to this school. Tom didn't come to school this morning,did he? ___ .Maybe he Mr Smith __________ at this school since he ________ Xiamen He___ (work) in this company since he finished college He didn't go to school this morning.（改为肯定句）He___ ___school t It is ten year since I (come)to this city填HAVE CAME可以吗