句型转换。
The man had a terrible accident during the trip. (改为同义句)
A terrible accident _______ ______ the man during the trip. 
My mother will be back in two hours. (对画线部分提问)
______ ______will your mother be back?
The girl’s left leg was wounded. (改为同义句)
The girl ______ _____ ______ in her left leg. 
Tina came to the office half an hour ago. (用for half all hour替换half all hour ago)
Tina ______ _____ ______ ______ ______ for half an hour.
His uncle left for Rizhao yesterday. (用in about three days改写句子)
His uncle ______ _______ for Rizhao in about three days.