Here are the answers:
A. His uncle lived in Samara last year.
Explanation: The sentence refers to an action that happened in the past, so we use the past simple tense (lived).
B. My aunt lives in Vladivostok.
Explanation: The sentence describes a general fact or a current situation, so we use the present simple tense (lives) because 'my aunt' is a singular subject.
C. We usually stay at home in the evening.
Explanation: The sentence describes a habit or routine, so we use the present simple tense (stay) because 'we' is a plural subject.
D. They stayed at home last night.
Explanation: The sentence refers to an action that happened in the past (last night), so we use the past simple tense (stayed).
E. Denis laughed a lot at the circus yesterday.
Explanation: The sentence refers to an action that happened in the past (yesterday), so we use the past simple tense (laughed).
F. He always laughs at the circus.
Explanation: The sentence describes a habit, so we use the present simple tense (laughs) because 'he' is a singular subject.