29. Please _____yourself from smoking and spitting in public places, since the law forbids them.
A. restrain B. hinder C. restrict D. prohibit
restrain 限制，抑制（某人的行為）
hinder 阻礙，阻礙
restrict=put a limit 限制 (時(shí)速，物價(jià)等)
prohibit 禁止
hamper 妨礙，約束
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