外语when Read and match

外语when Read and match
1.She was skating a.he saw a tree in of him.
2.We were cooking sausages b.it flew into a tree.
3.You were flying your kite c.she fell down.
4.He was skiing down the hill fast d.the kitchen caught fire.
5.I was sleeping e.their train arrived.
6.They were waiting at the station f.you phoned me.
中间都要有一个when,再用when造过去进行时的句子6句.