①周王室—周王正妻所生之子
②周王室—周王嫡长子、嫡长孙
③诸侯国—诸侯嫡长子、嫡长孙
④卿大夫封地—卿大夫嫡长子、嫡长孙
A:①②③④
B:①②③
C:②③④
D:②③
—Would you mind staying in such a noisy room?
—No, but my son needs a _________ place to study in.