Exercises: Filling 7. The marathon(马拉松) runner had to give up because he couldnt endure the pain in his stomach halfwa 8. Everyone looked when peter challenged the professors remarks about Hemingway's writing style. startled7. The marathon (马拉松 ) runner had to give up _____ because he couldn’t endure the pain in his stomach. halfway 8. Everyone looked _____ when Peter challenged the professor’s remarks about Hemingway’s writing style. startled Exercises: Filling