Complete the sentences.
1. As all the seats were occupied in cafeteria, we couldn't eat anything for lunch.
All the seats(
) in cafeteria, we couldn't eat anything for lunch.
2. While Mr. Smith was talking on the phone, his son started to cry.
) on the phone, his son started to cry.
3. Since the train was delayed due to heavy snow, we had to cancel our reservation at the restaurant.
) due to heavy snow, we had to cancel our
reservation at the restaurant.
4. As he had been called by his middle name,
he didn't realize it was his turn.
) by his middle name, he didn't realize it was his turn.