Sunset at Mount Huangshan is a beautiful scene, _______ I’ll never forget.
The new technology, if____ to farming, will help increase the grain output.
More and more high-rise buildings have been built in big cities____ space.
Nowadays, more and more people like to hunt for what they want at www.taobao.com and have them ____ by the express company.
Only after Mary read her composition the second time ____ the spelling mistake.
The teacher stressed again that the students should not ____any important details while retelling the story.