After Yang Liwei succeeded in circling the earth, our astronauts desired to do was walking in space.A. whereB. whatC.thatD,how
Teachers have to constantly update their knowledge in order to maintain their professional(专业的)_______.
Everything comes with _____ price; there is no such _____ thing as a free lunch in the world.
The most important thing_______we should pay attention to is the thing_______I have said.
We are invited to a party ________in our club next Friday.
He's got himself into a dangerous situation ______he is likely to lose control.