语法填空
Zhang Jianxing has been walking through the ancient forests of the Shennongjia National Nature Reserve for over two decades to find the wild man. He will not give up until he ____ (come) face-to-face with the creature. He began living in the mountain in 1994, after becoming ____(fascinate) by the wild man. Armed with a camera, he ____ (constant) looks for clues of the creature's whereabouts, living off the land and ____ (sleep) in abandoned homes and empty caves. To him, the wild man is a branch of science,____ that he has been studying for a very long time. So far, he has collected enough evidence of the wild man's ____(exist) —more than 100 hair samples and 3,000 photos of large footprints (脚印). He even came close to seeing it for himself no less than nineteen____ (time). However, most scientists regard it as nothing more than a legend ____ there is a lack of concrete evidence. But Zhang Jianxing ____(convince) that he will one day find the wild man himself and prove the scientists wrong. To him it's just ____ matter of time.
