题目内容
【题目】They’ve been good friends s________ they were little kids.
【答案】since
【解析】
句意：他们从小就是好朋友。
根据句中“have been good friends”可知，句中时态为现在完成时；结合句中“they were little kids”可知，此处是“自从他们是小孩的时候，他们就成了好朋友”；since是连词，意为“自……以来”。故填since。
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题目内容
【题目】They’ve been good friends s________ they were little kids.
【答案】since
【解析】
句意：他们从小就是好朋友。
根据句中“have been good friends”可知，句中时态为现在完成时；结合句中“they were little kids”可知，此处是“自从他们是小孩的时候，他们就成了好朋友”；since是连词，意为“自……以来”。故填since。