--- Would you care for a cup of coffee? --- I ________ one. Thank you just the same.

The College Entrance Examination________near, so you should be prepared for it.

Although the causes of cancer ____we do not yet have any practical way to prevent it.

With more forests being destroyed, huge quantities of good earth ______ each year.

一Ready to give up guessing，Sandy?一No，no，hold on! I think I______ at the answer now．