This is my first time to see mousk.

It is my frist time to see mousk.

It's his first time to come here.

It'll be my first time to go to an American zoo.



I have no doubt about that.

No doubt.

Let's work on this one together. work on 取り組む

The mountain air feels so good.

The air is crisp.


The wind is refeshing.

It depends on his schedule.

How do you spend your weekend? It depends.

depend on ~による