单选题 《复合题被拆开情况》Woman: I don’t like riding buses.Man:【D1】________Woman: They are seldom on time.【D2】________Man: Don’t they clean the bus every night?Woman:【D3】________, but with too many passengers on them, they can’t be very clean.Man: You should bring some wipes with you.Woman: That’s a good idea.Man: Then you can wipe your seat and window.Woman; People will think I’m strange.Man: Who cares?【D4】________Woman: That’s for sure.Man: Don’t worry about what people think.A. I think they do.B. Why not?C. Besides seats and windows are dirty.D. Everyone is strange. 《问题》：【D3】