1. is/ by / Julius Caesar/ believe/ his friend /to have been / killed/
2. I/ my mailbox/ to / the key/ have lost/
3.They will not come unless they are invited. ( If they are not )
_____________________________________________________
Thank!
更新1:
1. is/ by / Julius Caesar/ believe/ his friend /to have been / killed/ Julius Caesar是凱撒大帝!Thanks