Ответ:
Exercise 3: Prepositions. Tick the suitable answer.
11.
... the summer, we go to the beach.
A In
12. We sometimes eat dinner...
seven o'clock.
B at
13. Her exams are ......................... June.
B in
14. My brother always goes to the restaurant... his birthday
A on
15. Do you sleep well ......................... night.
B at