c. Fill in the blanks with, so or because.
(Điền vào chỗ trống với so hoặc because)
1. I was really tired last night, so I went to bed early.
2. My mother helps poor children around the world __________ she is kind.
3. My dad is easygoing __________ I like to be around him.
4. My sister doesn't help with the household chores __________ she is lazy.
5. My brother doesn't like sharing things __________ he is selfish.