用合適的詞語填空，注意句首字母要大寫。

how many how long how often how far how? much

（1）— is the black hat？
—Twenty yuan.
（2）—? do you exercise a week？
—Once a week.
（3）—? eggs do you need？
—I need four.
（4）—? did he stay there？
—About a week.
（5）—? is it from Beijing to Shijiazhuang？
—It's 278 kilometers.

【考點】疑問代詞；疑問副詞．

【答案】How much；How often；How many；How long；How far