↑ 收起筛选 ↑
试题详情

The world’s population is getting larger and larger, so scientists are trying to _______ new ways to solve the food problem.

A. catch up with   B. keep up with    C. come up with    D. make up with

九年级英语单项填空中等难度题

少年,再来一题如何?
试题答案
试题解析
相关试题