Yunnan province in China was attacked by such a terrible drought this early spring ____________few people had experienced before, ____________ made us worry about global climate changes.
―You couldn't have chosen any gift better for me. ― ____.
“No student,”the headteacher stressed, “_______ go out of the school after ten o’clock at night without my permission. ”
The committee accepted his proposal that a conference be held _______ to deal with the issues arising in the course.
I have enough drinking water but ________ to waste.
It’s a common scene in the film Tangshan Earthquake that families cry helplessly over _____ is left of their homes.