(50) _____ AS-level examinations at the end of your first year (called the lower-sixth) and A-level qualifications at the end of your second year (called the upper-sixth).

The man suddenly realized that he was being watched by the neighbor.

The neighbor was watching the man and he suddenly realized that.

The neighbor was suddenly realized the man and watching him.

The man suddenly realized that he was watched by the neighbor.

It was not Steve who stole the money.          

Steve is thought to have stolen the money.

Many people think the money is stolen by Steve.     

The money is thought to be stolen by Steve.

Barry took our advice so he stopped smoking.

If we had advised Barry, he would have quit smoking.

Barry did not quit smoking because of our advice.

Despite being told not to smoke, Barry continued to do.

If I am to be honored, it is to be appreciated.

Thank you for your appreciation to honor me.

Because of your honor, I will appreciate.      

You are appreciated to honor me.

As they do the work which we have decided is unacceptable.

They have been decided that the work they do is unacceptable.

It has been decided that the work being done is unacceptable.

We have decided that we accept the work they do.

As they do the work which we have decided is unacceptable.

They have been decided that the work they do is unacceptable.

It has been decided that the work being done is unacceptable.

We have decided that we accept the work they do.

conference

lecturer

reference

researcher