Sentence: It was very windy; therefore, all the flights were cancelled.
2. Cause: She ate too much.
Effect: She got stomach ache
Sentence: She ate too much so she got stomach ache
3. Cause: I ran out of money.
Effect: I borrow my friend's money
Sentence: Because I ran out money, I borrow my friend's money
4. Cause: He is afraid to fly.
Effect: He will go to Surabaya by bus
Sentence: He is afraid to fly so he will go to Surabaya by bus