(1) この Eメールの
ア Cathy wants Mary to come to Japan again to meet her friends and study Japanese literature together.
イ Cathy will keep studying Japanese literature, and she wants to be a scholar of Japanese literature in the future.
ウ Cathy thinks she has to study Japanese more because she can't tell her friends about her country in Japanese at all when they go to the library.
エ Cathy is glad that she traveled all around Japan to see beautiful Japanese gardens with Mary and happy that they enioyed seeing them together.