1.The little seal isn't laughing at us.
<span>2.The clever dolphins aren't learning to run.
3.The big whales don't eat from trees.
4.The crocodiles don't have a lot of fun.
5.Look! The giraffes aren't having a bath.
6. The dolphin isn't sitting in the sun</span>
a. The goods which they need are essential.
<span>b. The schools and hospitals which t</span>hey provide are essential.
c. The goods which he buys are valuable.
d. The money which people earn buys essential commodities.
e. The goods and services which people produce are very useful.
f. The work which is we do called economic activity.
g. The work which people do provide them with money.
h. The economic activities which people undertake make up the economic system.
1 on
2 between
3.b
4 a
вроде так
(5) Complete the text with the verbs in brackets.
Marie Curie (was) a scientist. She (lived) in Paris, France but she (was not) French, she (was) from Poland. She (met) her husband, Pierre, at university in Paris, and together they (discovered) radium. Many of the teachers at the university (did not want) Marie to teach there because she was a woman, but in 1906 she (made) history and . . (became) the first woman to teach at the university, three years after becoming the first woman to win a Nobel prize.