4)
I have to work overtime, so I can't feed the dog on time.
5)
We knocked at the door, but no one answered.
6)
The weather is hot in summer, so we wear light clothes.
7)
My father is a doctor and my mother is a shop assistant.
8)
I have a toothache, so I must see a dentist as early as I can.
9)
I love collecting stamps and dolls.
10)
The TV is on, but nobody is there watching.
