Mary keeps talking about the party. She had a very good time,_______?
A:hadn't she
B:had she
C:didn't she
D:did she
下列各句中,划线的成语使用恰当的一项是()
目前,我国正在加快推进海绵城市建设,努力将城市建设成具有吸水、蓄水、净水和释水功能的海绵体,提高城市防洪排涝减灾能力。这一做法( )