单选题
1分
We no longer keep up the close friendship of a few years ago though we still visit each other 【on oc...
We no longer keep up the close friendship of a few years ago though we still visit each other 【on occasion】.
参考答案: C
参考解析: 译文为：虽然我们仍然偶尔相互拜访，但好几年前就没有保持亲密关系了。On occasion有时。in good time及时；up to date最新的；now and then不时；once and for all坚决地
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