用动词的适当形式填空。

     Today, roller-skating is easy and fun. But a long time ago, it wasn't easy at all. Before 1750, the idea

of   1  (skate) didn't exist. That changed because of a man _2_(name) Joseph Merlin.

     One day Merlin received an invitation _3  (attend) a fancy dress ball. He was very pleased and a little

excited. As the day of the party came near, Merlin began to think how _4_(make) a grand entrance at

the party. He had an idea. He thought he _5_(get ) a lot of attention if he could skate into the room.

     Merlin _6_(try) different ways to make himself roll. Finally, he decided to put two wheels under each

shoe. These were the first roller skates. Merlin was very proud of his invention and dreamed of arriving

at the party on wheels while playing the violin.

     On the night of the party, Merlin rolled into the room _7_(play) the violin. Everyone was astonished

to see him. There _8  (be) just one problem. Merlin had no way to stop his roller skates. He rolled on

and on. Suddenly, he ran into a huge mirror that _9_(hang)on the wall. Down fell the mirror, breaking to

pieces. Nobody _10  (forget) Merlin?s grand entrance for a long time.

1.______ 2.______ 3.______ 4.______ 5.______

6.______ 7.______ 8.______ 9.______ 10.______