1．It was said that this was the only copy of the book in existence(exist)．
2．He claimed to have discovered(discover) a new planet.
3．Before you start, it seems that the task is unlikely(unlike) to be accomplished.
4.It was getting dark; I found a car stuck(stick) in a pool by the side of the road.
5．He pretended to be sleeping(sleep) when I came in.
6．“The match between the two teams was exciting，” said Federer, “and we hope to see a second.”
7．It was difficult to calm down the football fans.
8．In the past few years there have been(be) great changes in my hometown.
9．A mysterious(mystery) illness is affecting all the animals.
10．The speed of the car was frightening(frighten) and that was the cause of the car accident.
