I found my watch since a week.改错

I found my watch（ ）A.MISS B.GONE I found my watch since a week.改错 这道语法题怎么答?为什么?Returning to my apartment,___D____.A my watch was missing B I found my watch disappearedC I found my watch missed D the watch was missed 这句话写的对不对Returning to my apartment,I found my watch missing. With the help of the teacher,I found my lost watch.（保持句意不变）________ ________ the teacher,I found my lost watch. With the help of the teacher,I found my lost watch.（同义句转换）______ ________the teacher,I found my lost watch. Returning to the home, _________________ A. I found my watch missing B. I found my watch missed此题选什么?为什么? When I returned to the classroom,I found my watch（ ）.是用lost还是missing? I said to him I have lost my watch and would found it.的直接引语 I said to him I have lost my watch and would found it.的间接引语 The watch I lost yesterday ----in my drawer 为什么是has been found I found my bike ( ) 英语（ ）to my room,I found my watch missing为什么选择Returning而不选择Returned my watch ---------这里该用be lost 还是has lost原句：my watch --------.I have looked for it everywhere but haven't found it. My watch is nowhere to be found,I must have dropped it when I was on the bus为什么是to be found I(m ) find my watch I entered the classroom,I found some students_____ (watch )TV is my watch ____the lost found case (填介词)