Life in the 21st century is much better than_____ used to be.A．thatB．itC．what D．_刷题宝

题干

Life in the 21^st century is much better than_____ used to be.

A．that

B．it

C．what

D．one

上一题下一题 0.64难度单项选择更新时间:2011-03-03 03:48:46

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