Light-to-moderate smokers were ________ to die of sudden heart problems than those who had never smoked.
More and more high-rise buildings have been built in big cities __________ space.
I don’t think the experiment is _________ failure. At least we have gained _________experience for future success.
“Mum, why do you always make me eat an egg every day?” “_____enough protein and nutrition as you are growing up.”
A broad smile spread_____ Jack’s face when he eventually gained a scholarship.
China’s Beidou global satellite navigation system will have been completed by 2020, ____ of more than 30 satellites.