определить время и залог сказуемого Iron is referred to as the most important metal of...

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определить время и залог сказуемого

Iron is referred to as the most important metal of our age.

The Moscow Metro is developing rapidli.

The name "electron"was given to the small negative particle.

The students were testing new devices in the laboratory last evening.


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1) Present simple passive (about iron)
2) Present progressive  active (Moscow)
3) Past simple passive (electron)
4) Past continuous active

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