Would you please tell me which is correct?
1. Those students of Mr Smith('s) are going to the gym.
2. A cousin of my wife('s) is coming to visit next week.
And how about these?
1a. Those students in/of Mr Smith's class are going to the gym.
2a. One of my wife's cousins is coming to visit us next week.
I think these [1a & 1b] sound more natural. What do you say?
Thank you very much.