9.“Oh, Peter, you are running a high fever. You _______ go to see a doctor or you’ll miss the entrance exam.” said the teacher.
If you have any difficulty ____ how to skate, you can turn to Jacky.
He is such a good teacher ______ we all respect.
They are talking _______ they were old friends.
____ it is to skate on real ice!
From the ______ expression on his face we can guess something ______ must have happened to him.