Liz: Hi Mum.
Mother: Hello darling, how are you?
Liz: Fine thanks, and you?
Mother: Oh, really well thanks. How is your class selection going?
Liz: Fine. I met with my school counselor, and he showed me which classes I have to complete by the end of the year, and which ones I can choose as electives.
Mother: Anything interesting?
(1)Liz: Well, yes. Even though I'm in a psychology program, I can still take an elective or two. (2)History of art really appeals to me; it might even help with my major.
Mother: Yes, it'll help you understand how thoughts and attitudes have developed in society. It'll also give you a break from so much heavy thinking! I would certainly do it. You'll probably learn a lot more from it than you realize.
Liz: Yes, that's how I feel about it too. I still have a week to make my final choices. I'll let you know once I've made them.
1a. Subject 'he' + 'a business man', + verb 'to continue' + with his hobbies.
b. Subject 'they' + past + science, + time to paint.
2. 'Nursing', 'family's medical problems.
b. 'Traveling' + 'them', 'their Youtube channel'.