A、Arrange for his credits transfer first. B、Think twice before he goes. C、Transfer his credits later on. D、Ask advice from Susan

W: Hi, Frank. What are you up to? Is that really a French grammar book?
M: Well, (19) I’m trying to teach myself some French. When I go to Montreal next semester, I don’t want to sound like just another tourist. Most of the people there are bilingual.
W: (20) Leave Boston to go to Montreal? I didn’t know this university had a program in Canada.
M: It doesn’t. I’m planning to take a short leave of absence from school, so I can go there on my own.
W: What’s the reason for this sudden interest in Canada?
M: Well, actually I’ve been thinking about going for some time now. I know someone there who’s been wanting me to visit.
W: A relative?
M: An old friend of my uncle’s runs a chemical engineering department there. So, I’m hoping he can help me enroll in some interesting courses.
W: (21) If you want those credits transferred back here later on, you’d better arrange for it before you leave. Don’t forget what happened to Susan after she came back from Rome.
M: Yeah, but her situation was different. I already have all the credits I need to graduate.
W: So you’ll be taking courses just for the sake of learning.
M: That will be a nice change of pace, won’t it?
19．What is the man doing at the beginning of the conversation?
20.What does the man plan to do?
21.What does the woman suggest the man do before leaving?