The stone on the river bank rolled underher feet; she was _____into the river，and she called out for help

I still remember the village ________ I grew up.

How unhappy your roommate looks!—-Yes，but he’s not willing to tell me what it is____ is troubling him.

I shall never forget the days ______ I stayed in Africa, ________ has brought me a lot of advantages.

Look, ____ fashionable clothes is she wearing that all the eyes are fixed on her![ ]