If you have any information regarding the identity of the man __________left his car parked in the lot overnight, please contact the security department.

A．who

B．whom

C．whose

D．which

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参考答案

本题为选择恰当的关系代词的问题。先行词the man表示人，关系从句没有主语，因此主格关系代词who为正确答案。

1 Experience suggests that small, integrated organizations can operate__________in critical situations than large firms can.

A．efficiently

B．more efficient

C．efficiency

D．more efficiently

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2 After ten years spent trying __________to become the number-one west coast service provider, the corporation finally succeeded.

A．high

B．down

C．hard

D．soon

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3 Many oil companies are now making alternative energy __________in an effort to remain competitive in future energy markets.

A．payments

B．contributions

C．donations

D．investments

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