题目内容
___________________________ (为了确保计划安全), we’d better take some time to cover the details. (ensure)
To ensure the safety
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智趣暑假温故知新系列答案题目内容
___________________________ (为了确保计划安全), we’d better take some time to cover the details. (ensure)
To ensure the safety
智趣暑假温故知新系列答案