1. Dogs have a very good_____ of smell and are often used to search for survivors in an earthquake.
A. view B. means C. sense D. idea
2. Only when I left my parents for Italy ______ how much I loved them.
A. did I realize B. I realized C. had I realized D. I had realized
3. The trees _____ in the storm have been moved off the road.
A. to blow down B. blowing down C. blown down D. being blown down
