During a trip to observe wild animals in Africa, I encountered the least brave animal on earth, the wildebeest(角马). I sat on a riverbank for three hours watching a group of thousands build (56)\_\_\
When I was young, I spent my summer vacations on my grandparents’ farm. The summer that I graduated from college, I (56)\_\_\_\__ my grandparents once again. When I arrived, I discovered that there