it's ()for us ()rainforests well Abad ,to protect B good,to protect C important,to protecting急

it's ()for us ()rainforests well Abad ,to protect B good,to protect C important,to protecting急
it's ()for us ()rainforests well Abad ,to protect B good,to protect C important,to protecting
急

it's ()for us ()rainforests well Abad ,to protect B good,to protect C important,to protecting急
B,保护热带雨林对我们有益处. it作形式主语,不定式to protect rainforests well 是真正的主语.

B

答案选B good,to protect
保护热带雨林对我们是有好处的！

B