Поставити дієслова в дужках у Present Perfect Continuous.

1. They ….( to play) volleyball for an hour.

2. He …. (to go ) in for swimming for six years.

3. We …. ( to study) since 11 o`clock.

4. The boy …. ( to play) football since 10 a. m.

5. Athletes …. To compete) with their opponents for two days.