Я не разбираюсь в Present Perfect​

1) I am at school now.

2) These children are in the yard.

3) My sister plays tennis.

4) A daughter studies at the university.

5) The pupils of our school take part in this competition.

6) He gives me a book.

7) His brother often carries a lot of magazines.

8) I like watching TV every evening.

9) They always watch TV in the morning.

10) She usually dresses a coat and mittens in winter.

11) We are schoolchildren.

12) They usually have five or six lessons.

13) Tommy has a lot of relatives.

14) He often goes to school on foot.

15) I always do my home task in the evening.

16) Their son does his home task.