Нужно раскрыть скобки в Present Perfect Tense:
1. We just (put) up tents.
2. Alice already (go) sunbathing.
3. My mum (ride) a camel.
4. She just (leave) to Moscow.
5. The pupil (attend) specific classes in Art and Drama.

Ответ:

1. We just have put up tents

2. Alice has already gone sunbathing

3. My mum has ridden a camel.

4. She has just left to moscow.

5. The pupil has attended specific classes in Art and Drama.

Надіюсь зрозумів(ла) як робити такі речення. Have/Has + дієслово в 3-ій формі.