________ everyone else wouldn’t go to the mountain area, he went without a second thought[ ]

It is one thing to enjoy listening to good music, but it is________ another to play it well yourself[ ]

下列各句中，没有语病的一句是

Nothing happened____they got the photo developed, When they looked at the photo, they saw something hanging from the tree.

_____ all the seats full, he had no choice but to stand up.