... ……. the summer. the summer. d. We walked d. We walked ……. ……. half and hour to half and hour to reach the waterfall. reach the waterfall. e. They planned to have the trip e. They planned to have ... in in the summer. the summer. d. We walked d. We walked for for half and hour to reach half and hour to reach the waterfall. the waterfall. e. They planned to have the trip e. They planned to have ... to have the trip ….… ….… June. June. f. She loves to watch the starts f. She loves to watch the starts ……. ……. night. night. 3.Complete the sentences with on, at, in,for 3.Complete the sentences...