题目内容
A stubborn boy like him dosen’t learn from his mistakes______ he was punished badly.
| A.if | B.when | C.since | D.unless |
D
解析
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题目内容
A stubborn boy like him dosen’t learn from his mistakes______ he was punished badly.
| A.if | B.when | C.since | D.unless |
D
解析