variety的形容詞形式是什麼

例句：

1、We have been up against various difficulties, but we surmounted them one by one .

我們曾經碰到各種各樣的困難，但我們一個個克服了。

2、Schools use various methods of testing.

學校採用各種各樣的測試方法。

3、Can you talk me through the various investment options?

你能給我詳述可以選擇的各種投資方法嗎？

4、The methods are many and various.

方法很多且各不相同。