Mary and I have been close friends we met each other 10 years ago.A.when B.since
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Mary and I have been close friends ______ we met each other 10 years ago.
| A.when | B.since | C.until | D.as |
试题答案
B
解析试题

Mary and I have been close friends ______ we met each other 10 years ago.
| A.when | B.since | C.until | D.as |
B
解析试题