If you’ve gone to the trouble of keeping your old iPhone or iPad going, it’s worth updating it to keep this important （）。
If you’ve gone to the trouble of keeping your old iPhone or iPad going, it’s worth updating it to keep this important （）。
A.infrastructure
B.routine
C.practice
D.functionality
正确答案：D
Tag：一带一路跨文化交际英语
时间：2021-12-05 14:29:06