You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.

— ___________________

— Once or twice a week.

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

在教育史上，第一个把教育学建立在心理学和哲学的基础之上进行研究，从而被誉为“科学教育学的奠基人”的教育家是____________。