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I spend/spent two weeks of my summer holidays in the summer camp. 
I enjoy/enjoyed doing different activities. climbing, biking.
Now I am/was not afraid of water. 
I iike/liked talking to the girls there and now two of these girls are/were my good friends.
I enjoyed to stay/staying   at the camp because I have/had a fantastic time there.
I hope I go/will go there next summre. I can't wait to go.