Grammar exercise 3 of 3 语法练习3
Use 的、了、地 as “Video lesson: Four big rules for Chinese grammar (语法 yǔfǎ)” explains it, through 7 items over 6 of its example sentences: fill the gap where the word was taken out, and put the words of each sentence back in order.
Video lesson: Four big rules for Chinese grammar (语法 yǔfǎ)
7 items. Each one you miss comes back later in the same sitting.