.It is up()the students themselves to decide their future.选项of,for to,from.

.It is up()the students themselves to decide their future.选项of,for to,from.
.It is up()the students themselves to decide their future.选项of,for to,from.

.It is up()the students themselves to decide their future.选项of,for to,from.
选to
it's up to“由.决定”的意思.

to

to
up to sb.
由...决定

to

to

to

up to you就是随你决定的意思