Вопрос по английскому языку:

Choose the correct answers.
1.Thousands of people .... the zoo every week
a) are visiting b) visit
2. At the moment the monkeys... lunch
a) have b) are having
3. They... at two o'clock in the afternoon.
a) usually eat b) are usually eating
4. The wolves... now
a) sleep b) don't sleep
5. Wolves... at night.
a) aren't sleeping b) don't sleep
6. What... at the moment?
a) do the tigers do b) are the tigers doing