It was not until all the fish died in the river_____the villagers realized the serious pollution.
Because his father was badly ill,he went home_______________ .
—What has the old woman been doing recently? —She has been______________ herself in making clothes for her granddaughter.
—Tod hadn’t pass the exam and was afraid of being scolded. —._______________________
By nine o’clock,all the Olympic torch bearers had reached the top of Mount Qomolangma, _______________appeared a rare rainbow soon.
It is impolite for boys to a beautiful girl,you can____________ her.