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It___________________ since the third century that coffee has a stimulatingeffect.

It___________________ since the third century that coffee has a stimulat

Câu hỏi

Nhận biết

It___________________ since the third century that coffee has a stimulating

effect.


A.
is known
B.
has known
C.
has been known
D.
was known
Đáp án đúng: C

Lời giải của Luyện Tập 365

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