--What do you think of the EXPO 2010?--- It’s great, of course. people are going to Shanghai for the EXPO 2010.
Can you find _____ in the sky?
---Show me your homework, Dave.----Sorry, Mrs Brown. I’ve_____it at home.
While listening in class, you should concentrate ____ your teacher.
Schools don’t allow ______ answers in the exam.
Thomas Edison is known _____inventions______ a great inventor.