Much _____ in the past few years to improve people

大学专科 已帮助: 时间:2024-07-19 22:09:11

Much _____ in the past few years to improve people’s health.
A. have been done
B. had been done
C. was done
D. has been done

难度:⭐⭐⭐

题库:大学专科,公共基础,英语类

标签:years,few,to

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