It's difffcult for all of us_____(get)to the top of the mountain.

It's difffcult for all of us_____(get)to the top of the mountain.
It's difffcult for all of us_____(get)to the top of the mountain.

It's difffcult for all of us_____(get)to the top of the mountain.
to get

to get

to get
固定句型 it is adj. for sb to do sth