.Traveling by plane is the most comfortable ， but it is also the _________ .

Father ________ goes to the gym with us although he dislikes going there[ ]

Look! What’s in the tree— bird, I think.

When you _____ yourself with others, you miss the wonder of who you are.

CCTV-10 often plays _____ around the world . It canhelp us learn more about not only nature but also different cultures andcustoms.