题目

Some of the students have already learned enough English to ________ a conversation with a native speaker. A. go on          B. carry on           C. keep on        D. hold on   答案： B   go on “继续”，接名词是需加 with; carry on “继续进行；进行”，作及物动词； keep on “反复……”; hold on “别挂断（电话）”。  

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