They live on a busy main road. ______ must be very noisy. 

 Freddie was speaking on ________ end of the line. 

Of all my friends ____will be able to persuade Tom to change his mind. He is so firm upon it.

Tom,Bob and Betty have arrived, but ___ students haven’t yet.

I cannot understand why Steven bought so many watches but never wears 　　　 of them.