I. Choose because or because of. làm và giải thích tại sao lại đi với because / because of 1. It was difficult to deliver the

I. Choose because or because of. làm và giải thích tại sao lại đi với because / because of
1. It was difficult to deliver the letter ………………………………… the sender had
written the wrong address on the envelope.
2. We decided to leave early ………………………………… the party was boring.
3. We had to cancel the trip ………………………………… the bad weather.
4. Paul was sad ………………………………… his bad grades.
5. They often visited their friends ………………………………… they enjoyed their
company