填空题


【参考答案】

expanding—改成extending
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even—改成ever
单项选择题
A．There were 24 passengers in the helicopter.B．More than half of the passengers were hurt.C．The helicopter made a wrong landing.D．The helicopter attempted to land in a difficult terrain.
A．There were 24 passengers in the helicopter.
B．More than half of the passengers were hurt.
C．The helicopter made a wrong landing.
D．The helicopter attempted to land in a difficult terrain.
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