We would like you_______ and we look forward_______ you.

Rising sea levels and drought caused by global warming could an increasing number of natural disasters.

Your son looks taller now.— Yes, and he is ______ theschool basketball team.

Achieving a high degree of proficiency(精通）in English as a foreign language is not a mysterious _______ without scientific basis.

Bill Gates has created a wonderful “window”, ______ people can surf the Internet freely