Here are the correct answers for each question:
6. Choose the correct variant:
Correct answer: C) of, to
The sentence would read: "Our modern system of writing is similar to the Phoenician alphabet."
7. As soon as the doctor… the man… in hospital.
Correct answer: 1. came, was examined
The sentence would read: "As soon as the doctor came, the man was examined in hospital."
9. I was walking ____ the station and __ chance I saw the glove that I’d lost __ the ground.
Correct answer: B) to, by, on
The sentence would read: "I was walking to the station and by chance I saw the glove that I’d lost on the ground."
10. Complete the sentence: Can you tell me …?
Correct answer: D) 2,4
So it should be: "Can you tell me how long they are going to live together?" and "Can you tell me how our students can learn all these rules?"
11. Choose the correct interrogative sentence.
Correct answer: E) How long have the previous (though it's incomplete, it's the closest to correct structure)
A more complete option would be "How long have the previous guests stayed?"
12. Choose the correct variant with modal verbs:
Correct answer: A) I could talk already when I was two years old.
The correct form would typically be "I could already talk when I was two years old."
13. Choose the correct variant:
Correct answer: C) The rain had already stopped when they arrived in Moscow.
This sentence is grammatically correct and conveys the intended meaning.
If you have further questions or need clarification, feel free to ask!