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Do you know him wEll? %SurE.WE()FriEnDs sinCE tEn ...

选C,看到后边有since就是现在完成时的标志.since和for一般情况是完成时的标志

sure, we ( are being ) friends since ten years ago.或sure, we ( have been ) friends since ten years ago.

C. have been

选A 现在完成时的谓语只能是延续性动词,选项C、D的become和make都是短暂性动词所以错误B选项缺少谓语动词

选C. 有了since 就要用现在完成时,所以A被排除. make 和become 都是短暂性动词, 所以选C.

1. B 这个很明显是现在完成时,即从过去某个时刻开始一直持续到现在.2. 第三人称单数用has,其余情况用have

选B,have become也是表示“已经成为朋友”,但是并不代表以后还是. have been 是一种状态,过去,现在,将来都是朋友.

[图文] -Do you know him well? -Sure. We_____ friends since ten years ago. [ ]A. wereB. have beenC. have bec -Sure. We_____ friends since ten years ago. [ ] A. were B. have been C. have become D. have

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