_____ is even important _____ as the earth cooled down, water began to appear on its surface.

Everyone present at the party was given a nice little gift with a suitable poem ________ to it.

y, Ican’t return your book today because I am only half way through it. —____ I have plenty of other books to read.

It ______ to be seen whether Yao Mingwill be fit enough to play in the new season.

Will you go thereby_____train—-No, I’ll take ______ taxi.