I find it still difficult to make friends with them.
There have been many wonderful football matches in this gymnasium. (see)
This gymnasium has seen many wonderful football matches.
I wonder if something happened to the child. (wondering)
I wonder what happened to the children.
It's no use talking to her about it again. (It's no use ...)
It's no use talking to her about it.
We used to be afraid of exams. (yes; Attributive clause)
There was a time when we were afraid of exams.
PS: I hope my answer can help you ~ ~