2. I always have difficulty getting up. (go to bed so late) 
You shouldn't go to bed so late 
3. Mai's room isn't interesting. (put some pictures on the walls)
She should put some pictures on the walls
4. What a beautiful view! (take a photograph)
You should take a photograph 
5. My sister has a bad cold.. (go to school)
She should not go to school 
6. Her parents was very kind to us. (write them a letter of thanks)
You should write them a letter of thanks 
7. Mai is putting on a lot of weight. (eat too much fatty food)
Mai should not eat too much fatty food
8. My first semester report is not good. (study harder next semester)
You should study harder next semester 
9. Liz needs a change. (go away for a few day)
Liz should go awat for a few days
10. I've got a bad cough. (smoke)
You should not smoke