----I think it’s impossible for us to work out the plan in just two days. It’s too difficult.----You’re right. We can’t be _______ careful and hard while working on it.
—____ interesting the storybook is! —Yes. I have read it twice.
Please connect the phone ________ the computer. A at B.into C.with D.in
Why not join an English club to practice ________?
Mr.Brown teaches ________ well ________ everybody likes his lessons.
If you meet some new words, you'd better ________ in a dictionary.