1. What is the correct variant for She a letter at the moment ? a) Writes b) Is writing c) Has written 2. How would

1. The correct variant for "She a letter at the moment" is a) Writes. This is the present simple tense which indicates a habitual or regular action. Since the person is currently doing the action of writing a letter, we use the simple present tense "writes".

2. To complete the sentence "They haven"t seen each other left school", the correct option is a) After. The phrase "haven"t seen each other" implies that they have not encountered each other from a specific point in the past until now. In this case, "after" is used to indicate that the non-encounter happened after they left school.

3. The correct option for the question "In which frequency does she play tennis?" is b) A week. This answer indicates the regularity of the activity. "A week" signifies that she plays tennis once every week.

4. The correct option for the sentence "Whose car do I hate driving?" is a) My father"s. The possessive pronoun "my" indicates that the car belongs to the speaker"s father.

5. The correct option for the question "What do they always do before a competition?" is c) Don"t they. Since the question is asking about a habitual action, the appropriate question tag is "don"t they".

6. To answer the question "Who do you think is more responsible between Sam and Bob?", the correct option is b) More responsible. The phrase "more responsible" is used to compare the level of responsibility between the two individuals.

7. The sentence "Have you already seen "Adams Family"" is missing the option choices. However, assuming the options are a), b), and c), the correct option would be a) Yes. The question asks if the person has seen the movie "Adams Family", and answering "yes" confirms that they have already seen it.

I hope this comprehensive explanation helps clarify each question. If you have any further doubts or need more examples, feel free to ask!