Grammar exercise 1 of 2 语法练习1
Use 倍 as “How to use 倍 (bèi) in Chinese grammar: -times, -fold and multiplication” explains it, through 8 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.
How to use 倍 (bèi) in Chinese grammar: -times, -fold and multiplication
8 items. Each one you miss comes back later in the same sitting.