Ⅰ.单句语法填空
1．Since the new rules began to work，we students have been permitted to_have (have) one hour for exercise every day.
2．Seeking (seek) to find out the real cause of the accident was what he was eager to do.
3．The traveler who was missing in the mountain was_spotted_(spot) by a plane finally.
4．As far as I know，Tom's careless driving accounted(account) for the accident.
5．Though he is an ordinary man working behind the scenes(scene)，he does extraordinary things.
6．I won't take a/my chance on a July holiday in Britain—it always rains.
