Thank you for sending us fresh vegetables of many kinds. You have done us a grea

Thank you for sending us ____ fresh vegetables of many kinds. You have done us ____ a great service.

A、不填；a    B、the；a       C、不填；不填       D、the；不填

试题答案

A

解析:

考查冠词的用法。第一空表示泛指，而第二空构成一个短语do sb. a great service，其意思为“给某人提供好的服务”。Service在这里为抽象名词具体化。