Grammar exercise 1 of 2 语法练习1
Use 划算、划、算 as “How to use 划算 (huásuàn) in Mandarin Chinese: to be a bargain” explains it, through 10 items over 5 of its example sentences: fill the gap where the word was taken out, and put the words of each sentence back in order.
How to use 划算 (huásuàn) in Mandarin Chinese: to be a bargain
10 items. Each one you miss comes back later in the same sitting.