The key to ___ new ideas is to observe daily life carefully, and not to take things for granted.
All these actions by NATO ______ with the universally accepted international laws.
- I hear that Jason is planning to buy a car. -- I know. He _____ enough for a used one by next momth.
Television has many advantages. It keeps us ____ about the ___ news and also provides entertainment in the house.
Is there a certain cure ___ lung cancer yet?
-- Can I call you back at two o'clock this afternoon? -- I'm sorry, but by then I ____ to Beijing. How about five?