I knew he failed in the final exam the moment I _______ him crying alone in the classroom.(原创)
________ children whose parents had died in the earthquake ________ sent to other families.
________ by his look, he doesn't think much of our plan.
After graduation, she wanted to ________ her own business.
Tom took the police to the spot ________ the accident happened.
National Day ________ people singing and dancing happily in the street.