Grammar exercise 1 of 2 语法练习1
Use 半、一、个 as “The difference between 半 (bàn), 一半 (yí bàn) and 一个半 (yí ge bàn) in Chinese grammar” explains it, through 6 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.
The difference between 半 (bàn), 一半 (yí bàn) and 一个半 (yí ge bàn) in Chinese grammar
6 items. Each one you miss comes back later in the same sitting.