对普通话的规范包括:一、语音规范_:以北京语音为标准音;二、_词汇规范:以北方方言为基础;三、_________:以典范的现代白话文著作为蓝本。
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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