I was ______ to learn that you are going to spend the summer with your parents in Hong Kong.

A．at the time when Japanese government required that untreated blood was forbidden to be imported from abroad
B．when it was sure HIV virus was a great threat to human beings
C．because there was an emergent need for blood in treating hemophiliacs
D．as tile Health and Welfare ministry made an unanimous recommendation on the imports of blood products

A．was around thirty odd with his pseudonym
B．was called Hiroshi Shimizu who was roped by the doctor
C．was an infuriated, clamorous adolescent who got married four years ago
D．was a greatly upset young man who got his blood transfusion about ten years ago