15000 bài tập tách từ đề thi thử môn Tiếng Anh có đáp án (Phần 55)

Scientists say that (44) _______ the next thirty years we will not be able to tell the difference be...

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Scientists say that (44) _______ the next thirty years we will not be able to tell the difference between the real people and the virtual people- that is, people created by computer.

within

for

about

during

Giải thích

Chọn đáp án B