Grammar exercises: 加以 (jiāyǐ) in Chinese grammar: apply to, engage in, endeavour to 语法:加以、加、以 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 31 items.