选择适当的选项,完成句子。
⑴There was a wonderful robot show A. on Tree Planting Day next month.
⑵People work together to keep B. to live.
⑶Wendy is going to plant some trees C. the Earth clean and healthy.
⑷Kitty went to the museum D. to see the old things last week.
⑸People, plants and animals need water E. on the fifth floor at the museum.