(2014·石家庄质检)I admire Stephen Hawking greatly，whose________about black holes has a great effect on astronomy.

 Surprisingly，Susan's beautiful hair reached below her knees and made ________ almost an overcoat for her.(2011·安徽)

The part that China _________in the international affairs _________ in the international society.

—The company has been performing poorly during the past few years.—In my view, it needs to _______ its image.

Rather than_____on a crowded bus, he always prefers_____a bicycle.