232.
W: Hi, Jack. Who are you writing to?
M: I'm writing to my parents telling them I'll stay here this summer.
W: You're not going home? I thought you were going on a trip to Japan with your family.
M: Well, I intended to go with them, but I thought again and changed my mind.
W: Tell me. I'm interested in knowing what keeps you from joining your beloved family and staying here. It certainly is not studying.
M: No, certainly not. Michael arranged for me to work at his uncle's institution.
W: How much will you be paid?
M: Judy, I don't do it for money, but for experience. Besides, it's voluntary work.
W: You work without payment? That's really something.
M: When will you leave for home?
W: Tomorrow. We'll fly to Hawaii two days after. I really have to pack now.
M: Go then. Have a nice vacation!
W: I'll send you postcards.

答案解析：
(1) 正確答案為C。根據I'm writing to my parents telling them I'll stay here this summer.我在給父母寫信，告訴他們這個暑假我要留在這里。可推知，男子暑假要留在學校，因此C項正確。
(2) 正確答案為B。根據it's voluntary work.這是義務工作。可知，男子要做一些義務工作，因此B項正確。
(3) 正確答案為C。根據Tomorrow. We'll fly to Hawaii two days after.明天回家。兩天后我們要飛去夏威夷。在明天的兩天以后，可知，女子要在三天后前往夏威夷，因此C項正確。