Write the correct form of the word in brackets to complete each sentence.

1. I have _______ memories about my trip to Sentosa in Singapore. (forget)

2. Children nowadays are more aware of environment _______ than we did in the past. (protect)

3. The most memorable part of our _______ was the boat ride on the River Cam. (tourism)

4. England is very good at _______ its historic buildings and monuments. (preserve)

5. We are getting ready for our graduation _______. (perform)