More and more high-rise buildings have been built in big cities space.
Faced with a bill for $10,000, _____.
We know that a smile is usually a sign _____ people feel friendly and happy, but _____ we don’t know who the new person is?
Mr. Black Shanghai in a few days. Do you know when the earliest plane ________ on Sunday?
Many road accidents _____________ from careless driving, according to the recent reports from the police.
Living in a fast-paced world, we _______ get left behind if we stop learning.