1. It's not necessary for you to do the test
-> You...............................................
2. Nobody can deny that she has a beautiful voice
-> It........................................................
3. The could not trace who had supplied the information in the first place
->The course...................................................
4. I gave Tom the message, but he already knew about it
-> I needn't.......................................................
5. It is esseential that no one be told about our plans
-> You......................................
6. It was wrong of you not to call the doctor at once
-> You.............................................................
1. It's not necessary for you to do the test
-> You......don't have to do the test .........................................
2. Nobody can deny that she has a beautiful voice
-> It........can't be denied that she has a beautiful voice...............................................
3. The could not trace who had supplied the information in the first place
->The course....... of the infomation couldn't be traced............................................
4. I gave Tom the message, but he already knew about it
-> I needn't........ have given Ted the message because he already knew about it................................................
5. It is esseential that no one be told about our plans
-> You.........shouldn't tell someone about our plans .............................
6. It was wrong of you not to call the doctor at once
-> You........... should have called the doctor at once..............................