Question

fill in the blanks.................... _ travelling by plane is fast, it's expensive _ bad for the environment. (although, but,so,and,then,un​

Answer 1

Answer:

then, but........✌✌

Explanation:

❤❤☺☺☺✌

Answer 2

Although traveling by plane is fast ,its expensive and bad for environment
Plaese mark me as brainliest