Sure! Here are the answers to the questions you've provided:
A1. Choose the correct form of the verb. My friends... in Chicago since 2003.
- 3) have been living
A2. Mark the adverb.
- 3) often
A3. Choose the right answer. Do you often read newspapers?
- 1) No, I haven't read them for a long time.
A4. Choose the variant with for.
- 3) He has been playing guitar... two years.
B1. Make the sentence using the following words. A possible sentence could be:
- Many research areas in space leads Russia.
(Note: The sentence structure could vary based on different interpretations, but the essence should remain.)
C1. Match the expressions to the right translation.
- space exploration - b. исследования космоса
- a spaceship - а. космический корабль
- do research into space - d. исследовать космосом
- a key problem - с. ключевая проблема
Feel free to ask if you have more questions or need further assistance!