题型：填空题 题类：常考题 难易度：普通
北师大版小学英语六年级上学期综合测试（一）
①If I have a toothache, A.I should take some medicine.
②If I have a problem, B.I visit the dentist.
③If I see an accident, C.I should call the police.
④If I don't know something, D.I should ask the teacher.
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