题目内容
根据所给汉语在空白处填入一个适当的词：
What's the ________(人口)of China?
Have you ever ________(挤奶)?
My shoes are ________(穿) out.
There is less water in the river. It's getting ________(干).
She stopped and ________(选择) a book from among those on the table.
