【正文】
定從1. The reason ____ he gave us was that his car broke down on the way.A. why B. what C. how D. which2. More and more people go jogging in the morning, _____benefits for health arise from the air rich in oxygen.A. which B. that C. whose D. who3. ______ is known to as all is that the old scientist ______ life was hard in the past, still works very hard in his eighties.A. as。 whom B. what。 whom C. what。 whose D. as。 whose4. She’ ll never forget her stay there ______ she found her son who had gone missing two years before.A. that B. which C. where D. when5. The countri