2 . 我们不仅获得了快乐和有关自然世界的知识，而且我们都充满好奇心地探索我们周围的环境。
We not only gained recreation and relevant knowledge about the natural world but we all _________

3 . 当我看到一头可怕的熊张着血盆大口，我害怕得要死。我吓得站在那里，头发都竖起来了。
When I saw ________ opening its bloody mouth, I ________. I ________ there, with my hair standing on end.

4 . 天色渐暗，他感到一阵不安。
As the sky gradually darkened, ________ .

5 . 老师和我对视一眼，他的眼睛湿润了，好像在说“谢谢你”。
My teacher ________, his eyes wet with tears as if saying “thank you”.

7 . 虽然我们很累，但我们很高兴，从这样一个具有挑战性的活动中获益良多。
________________, we felt delighted and benefited a lot from such a challenging activity.(倒装句)

8 . I didn’t realize a small act of care can melt people’s loneliness until I experienced the event. (句型转换)
→Not until I experienced the event ________________ a small act of care can melt people’s loneliness. (倒装句)
→________________ I realized a small act of care can melt people’s loneliness. (强调句)

9 . 在去农场的路上，迷人的景色映入眼帘，我们兴奋不已。
On the way to the farm, ________________, and you can imagine how thrilled we were.

10 . 我们预定了一个房间，但是当我们按照预定的时间到达时，却被告知没有空房了。
We had booked a room, ________________, only to be told there were no rooms available.