Grammar exercises: How to use 长 (cháng) and 久 (jiǔ) correctly in Chinese grammar 语法：久、长练习

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.

3 grammar exercises over 35 items.