1．A terrible accident (事故) happened at the crossing and an ambulance rushed the injured to the hospital.
2．She couldn't afford the operation (手术) because her family was poor.
3．Britain last year spent nearly ￡5,000 million more on importing (进口) food than selling abroad.
4．In the latest election，Mary was elected chairman (主席) of the Students' Union.
5．Most pregnant (怀孕的) women remain off cigarettes while carrying the child.
6．She disguised (假扮) herself as a man so she could fight on the battlefield.
