1. Nam didn't go to work last week because of his sick.
=> Nam didn't go to work last week because he sicks.
2. Long often spends about a hour watching TV every day.
=> Long often spends about a hour to watch TV every day.
1 Nam didn't go to work last week because of his sick.
=> Nam didn't go to work last week because of his sickness.
2 Long often spends about a hour watching TV every day.
=> Long often spends about an hour watching TV every day.
GOOD LUCK!