Cho 4 số dương a, b, c, d. Biết rằng: b = ? và c =?   Chứng minh rằng 4 số này lập thành tỉ lệ thức.

b=?

c=?

they said that he invented the digital camera

He is said that the digital camera was invented by him.

1,The taxi driver is friendly.He took me to the airport.

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2,The meeting was interesting I went to it.

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3,I never for got the day I pirst met you then

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4,The town is small and peaceful I grew up there.

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5,I looked at this moom It was bright that evening

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