By the year 2021, 6% of all US jobs _______________by robots, report says.
A. will eliminate
B. will have been eliminated
C. will be eliminating
D. will have eliminated
KEY: B
Giải thích: by + mốc thời gian tương lai, động từ chia tương lai hoàn thành.
Dịch: Các báo cáo cho rằng, trước năm 2021, 6% tất cả nghề ở nước Mỹ sẽ bị mất đi do có nguời máy.
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