Grammar exercise 1 of 2 语法练习1
Use 算、上、了 as “The difference between 算 (suàn), 算上 (suànshang) and 算了 (suànle) in Chinese grammar” explains it, through 13 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.
The difference between 算 (suàn), 算上 (suànshang) and 算了 (suànle) in Chinese grammar
13 items. Each one you miss comes back later in the same sitting.