If traffic moves at low speeds, the number of accidents is       .

A Chinese low-budget film, Lost in Thailand, has _______ profits and praise since it hit movie theaters on 12 December.

Teenagers shouldn’t be _______ from school although they don’t do well in their studies. 

The young man, who had rushed into the fire to save the old man, _____ rewarding.

A horrible thought _________ him when he was waiting for Tom in the airport: what if the plane from Malaysia had been hijacked（劫持）?