17. Допишите предложения. Употребите Present Perfect.

Решение:

Нужно употребить Present Perfect, отвечая на вопрос и используя вторую часть предложения.

1. Will you do the exercise, please? - But I have done it.
2. Will you write the article, please? - But I have written it.
3. Will you read the instruction, please? - But I have read it.
4. Will you drink the medicine, please? - But I have drunk it.
5. Will you begin the project, please? - But I have begun it.
6. Will you eat the sandwich, please? - But I have eaten it.

Ответ: have done; have written; have read; have drunk; have begun; have eaten.