19. At weekends in Chengdu, you can often see many people _____ outside some restaurants, _____ to have dinner.
I’m very tired now but _____ I must finish the work today.
Many lifestyle patterns do such _____ great harm to health that they actually speed up _____ weakening of the human body.
I shall never forget the days _____ I spent with the Whites, _____ has a great effect on my life.
The country’s car industry is so strongly protected that foreign cars are _____ seen there.
In a room above the store, where a party _____, some workers were busily setting the table.