4. Choose the correct item. 1. Mark has decided to join/joining an environmental organisation. 2. Dan avoids buying/ to buy anything that cannot be recycled later. 3. I'll never forget taking/to take part in a rescue mission for the first time. 4. Peter was looking forward to starting/ to start his new job at the animal shelter. 5. Tina was proud to join/joining in the antiwar protest.

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