1. The exhibition provided many companies with an opportunity to _____ (展示) their latest products to the consumers at home.
2. China’s launching its Tiangong-1 means that it has the ability to _____ (探索) space.
3. His house is _____ (方便的) for several schools.
4. All the countries are making an effort to find a practical _____ (解决方案)to the challenge they are facing.
5. Effective measures must be taken to _____ (限制)the carbon dioxide emission from cars.
6. Nail biting is often an unconscious _____ (反应)a child has when he or she is anxious or shy.
