—Why haven’t you asked her to come here?

—She _______ an important experiment when I found her and she _____ it.

A．had done ; didn’t finish

B．was doing ; hasn’t finished

C．did ; wouldn’t finish

D．did; hadn’t finished

读城市化进程示意图，完成下列小题。

当前，多数发展中国家和发达国家城市化进程所处的阶段分别是（）

A.①②

B.①③

C.②③

D.①③