(根据括号内的适当形式填空)Listen to the teacher as ____ as you can in class.(careful)

(根据括号内的适当形式填空)What's the population of ____ ?(Australian)

(根据括号内的适当形式填空)The population has grown very ____ during the last three or four hundred years.(quick)

（完成单词）)We promise that we will never f____ your kindness.

（完成单词）)I wish you SUCCESS for the f____.

（完成单词）)Strangers are only friends you haven't m ____ yet.

（完成单词）)I'm leaving here. I will m____ friends.

（完成单词）)What c____ are the American flags?

（完成单词）)How long does your summer vacation l____?

（完成单词）)Let's raise our glasses. Here's to our f____.