1£®The news shocked the public that a bus with 15 passengers fell into the river.

2£®The problem whether/how/when we can collect enough money for the big project is unknown.

3£®I have no idea how Peter finished the task by himself.

4£®There is little doubt that the Internet plays a very important role in our life and work.

5.His secretary had no idea when Mr. Lee would come back, so he phoned to check the time.

6£®The fact that he has fully recovered makes me feel good.

7£®The professor showed evidence that his paper was based on original research.

8£®The manager didn’t answer the question who would take his place.

9£®The fact has worried many scientists that the earth is becoming warmer and warmer these years.

10£®A warm thought suddenly came to me that I might use the pocket money to buy some flowers for my mother’s birthday.