Could you review the next statements?

1- I like this institute but, I’m afraid to travel too much time.
2- From now on I will study more than before.
3- I met a friendly guy, ( I couldn’t/ can’t) help thinking about him
4- From time to time I go to the church.
5- I have not written entries here now that I have been studying for my exam.
6- The meeting will be at 5:00pm (now/ then), if you want to be before that time that’s ok.
7- I have nothing to see with the killer.
8- You make your life as a singer.
9- I have to make up my mind about my career.
10- Upon that, I don’t have more to say.