Mi a hiba ezekben az angol mondatokban?

1: to come TO the concert

2:Magyar mondatot kaphatnék? Nem teljesen értem mi akart a lényeg lenni.

3: but they have already been closed

4:It was a shame/pity (attól függ, hogy mit akarsz mondani szégyen/kár) attended the concert, however it was a good programme to spend your time with and it was also free (moreover túl komplikált)

1. They were also very happy and they decided to come to the concert with me.

2.The group consisted of 4 people. One of them was the singer and the rest of them played different kinds of musical instruments.

3. but they have been closed already/they have closed already.

4. It was a shame that only a few people have attended the concert. It was an interesting program to spend your free time on and above all, it was free.

Amiket zárójelbe írtam, azok vannak megjelölve hibásnak.