【正文】
whose D. as。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。 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 countries will join on another against