To fill in the blanks appropriately based on the context, here are some suggestions:

1. **(1)** "exploring"
2. **(2)** "a week"
3. **(3)** "went blank"
4. **(4)** "a deep breath"
5. **(5)** "a welcome escape from"
6. **(6)** "refreshed"

So the passage would read like this:

"Yesterday, our class **exploring** the vibrant rainforest on **a week**. Before the trip, we **went blank**! Luckily, our guide patiently helped me recall it. Surrounded by the green plants and trees, I took **a deep breath** of fresh air and felt my stress melt away. Exploring the rainforest not only filled my mind with knowledge but also provided **a welcome escape from** daily stress, allowing me to feel **refreshed**."