He was busy writing the story all the morning, pausing __________ to search for the right word.
She pretended to be calm but _______she was more than nervous at the time she was being questioned.
The problem ________ at the meeting yesterday.
________from his looks, he is a kind man.
Ladies and gentlemen, please fasten your seat belts. The plane _____.
The teacher spoke very slowly ____the students could understand everything he was saying.