It's time for us ( ) goodbye to each other.
A、say B、to say C、saying
B
就是刚刚那个句型。
It's time for us ( ) goodbye to each other.
A、say B、to say C、saying
C
It's time for us ( ) goodbye to each other.
A、say B、to say C、saying
to do 选B
it's time (for sb) to do sth
for sb 可以省略