1 Environmental pollution is one of … most serious problems facing humanity today.
a)
a b) the c) 0
2
… cake was cooked by my mother all evening yesterday.
a)
a b) the c) 0
3
I decided to visit … Ivanovs.
a) a b) the c) 0
4 My mother is cooking supper at … moment.
a) a b) the c) 0
5 Look at … blackboard.
a) a b) the c) 0
с английским

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Environmental pollution is one of the most serious problems facing humanity today.

The cake was cooked by my mother all evening yesterday.

I decided to visit the Ivanovs.

My mother is cooking supper at the moment.

Look at the blackboard.