Exercise 1. Choose the correct answer.

1. She has never ridden a bike.
2. The cliffhangers (скалолазы) have already climbed the mountain.
3. The milk in the glass has become cold.
4. The child has just returned home.
5. She has sailed around Lake Onega twice.
6. The baby has already slept.
7. Helen has lived in Rostov since childhood.
8. The men have not been to the World Championship in Moscow.
9. Has you ever gone scuba diving?
10. The doctor has just examined his chest.