Grammar exercise 2 of 4 语法练习2
Use 过 as “过 (guò) in Chinese grammar: past experiences, past actions” explains it, through 15 items over 8 of its example sentences: fill the gap where the word was taken out, and put the words of each sentence back in order.
过 (guò) in Chinese grammar: past experiences, past actions
15 items. Each one you miss comes back later in the same sitting.