Test 15min (after U 10)
Test 45''- cum bai 10-11
... influence of air pollution human beings?
A). to B). for C). on D). with
22). We should develop such sources of energy as solar energy and nuclear energy.
A). tradition B). revolutionary C). surprising ... article
16). Solar energy does not make the environment .
A). polluted B). pollute C). pollutant D). pollution
17). Do you see the beautiful young girl over there?
A). standing B). to stand...