I think these interesting old customs should be preserved.（英译中)

I found ______ interesting to read these stories.A、itB、thatC、it isD、that is

I suppose by the time I come back in ten years？ time all these old house have been pu

【D1】SPEAKER A: I LIKE WATCHING OLD MOVIES AND I THINK THEY ARE THE BEST. SPEAKER B:【D1】__

【D2】SPEAKER A: I LIKE WATCHING OLD MOVIES AND I THINK THEY ARE THE BEST. SPEAKER B:【D1】__

【D3】SPEAKER A: I LIKE WATCHING OLD MOVIES AND I THINK THEY ARE THE BEST. SPEAKER B:【D1】__

【D4】SPEAKER A: I LIKE WATCHING OLD MOVIES AND I THINK THEY ARE THE BEST. SPEAKER B:【D1】__