Translate the sentences paying particular attention to the infinitive forms.
НЕЛБ

1. Economics is supposed to study people producing and exchanging goods and services.

2. Economics is supposed to have studied people producing and exchanging goods and services.

3. Economics is supposed to be studying people producing and exchanging goods and services.

4. Economics is supposed to have been studying people producing and exchanging goods and services.

5. Economics is supposed to be studied by people producing and exchanging goods and services.

6. Economics is supposed to have been studied by people producing and exchanging goods and services.

Mila19911    2   27.04.2020 13:29    1