What kind of person do you think Liu Xiang is when participating social activities according to this passage?
Why will Billie Smith give the presentation?
He will help them to solve the problem of ______.
We are prepared to________(采取武力) if negotiation failed.
The "grid" will enable you to get on your computer the power of __ in the wodd.
What will they learn?
They will learn about ______.
We had a road accident last weekend, but we were (luck) __ to escape injury.