I REALLY BELIEVE MY LETTER CAME AS A GREAT SURPRISE TO JOHN.A. JO...

38.

I really believe my letter came as a great surprise to John.

A.

John might have been very surprised to receive my letter.

B.

John must have been very surprised to receive my letter.

C.

John must be very surprised to receive my letter.

D.

John might be very surprised to receive my letter.