When I wanted to express my thanks to him, words      me. I just held my hands firmly and choked.

．(2013·江西九江高三二模)________ around the university, we then were taken to a building, where many scientists worked.

I am _________down my thoughts about it.

Go on climbing to the top of the peak, and you will see all the____ hills.

–Do you have anything _________ for the weekend?–Yes. Go fishing with my son.