原句.Hardly had the game begun when it started raining.
改写句子.使意思相同.It startd raning ___ ____ ___the game began.
The old man can't walk if he doesn't have a stick.
The old man___ walk ____a stick.
To catch the train ,i left at 6.00.
iI left at 6.00.___ ___ ___ ___ ___ catch the train.