Замените придаточные предложения времени причастными оборотами (не опускайте союз when).
1 .You must have much practice when you are learning to speak a foreign language.
2. When you speak English, pay attention to the order of words.
3. Be careful when you are crossing the street.
4. When you are leaving the room, don't forget to switch off the light.
5.When they were preparing for the experiment, they checked all the devices.
6.When I was spending my summer holidays in the students' camp, I played football very often.

1 .You must have much practice when learning to speak a foreign language.

2. When speaking English, pay attention to the order of words.

3. Be careful when crossing the street.

4. When leaving the room, don't forget to switch off the light.

5. When preparing for the experiment, they checked all the devices.

6. When spending my summer holidays in the students' camp, I played football very often.