Grammar exercises: The 一 ... 就 pattern in Chinese grammar (yī ... jiù): as soon as, once, whenever 语法:就、一 练习
The example sentences of the article, a few to an exercise, in the order the article shows them. Each exercise takes the point's word out of a sentence for you to fill back in, then gives you the sentence's words to put in order, and an item you miss comes back later in the same sitting.
2 grammar exercises over 20 items.