题目内容：

请根据中英文提示或句意，写出句中所缺单词，使句子通顺。

1.---Why is the shop closed?

---It is open every day _______ Monday. You’d better go to another one.

2.Everybody knows black is the ________ of white.

3.He moved to another flat three _______( a group of building with streets on all sides) away from here.

4.When we talk with others in English， please be careful to _______(try not to do something) subjects like age， weight of money.

5.The big fire spread quickly and the firemen _______(设法) to put it out.