You can ask the policeman for help_________you don't know the way.

题型：单选题题类：常考题难易度：普通

甘肃省武威市第十七中学2018届九年级上学期英语期末考试试卷

A、though B、if C、unless D、until

举一反三

——Yes, it's difficult _________ interesting.

— ______ my dad _______ my mom likes it. They both prefer classical music.

—Thanks very much, _______ I can manage.

—He tried his best, he still didn't pass it.

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