Read the sentences about two mountain climbers. then complete the sentences with the past perfect simple or past perfect continuous form of the verb in brackets.​

Sure, I can help you with that! Here are the sentences about two mountain climbers:

1. By the time they reached the top, they (climb) _____ for six hours.
2. She (feel) _____ exhausted because she (not sleep) _____ the night before.
3. They (hike) _____ through the snow for two days before they reached the base camp.
4. When the storm hit, they (set up) _____ their tent and (wait) _____ inside for several hours.
5. He (slip) _____ on the icy slope because he (not wear) _____ proper crampons.

Now, let's complete the sentences with the past perfect simple or past perfect continuous form of the verb in brackets:

1. By the time they reached the top, they had been climbing for six hours.
Explanation: We use the past perfect continuous here because it indicates an action that started in the past and continued up until another point in the past.

2. She felt exhausted because she had not slept the night before.
Explanation: We use the past perfect simple here because it indicates an action that happened before another action in the past.

3. They had been hiking through the snow for two days before they reached the base camp.
Explanation: We use the past perfect continuous here because it indicates an action that started in the past and continued up until another point in the past.

4. When the storm hit, they had set up their tent and had been waiting inside for several hours.
Explanation: We use the past perfect simple and past perfect continuous here because these actions happened before another action in the past.

5. He slipped on the icy slope because he had not been wearing proper crampons.
Explanation: We use the past perfect continuous here because it indicates an action that started in the past and continued up until another point in the past.

I hope this helps! Let me know if you have any further questions.