Задайте различные типы вопросов к предложениям, поставьте предложения в отрицательную форму:

1) Mary and her friends are playing basketball now.

Отрицательная форма:
Mary and her friends are not playing basketball now.

Вопросы:
Are Mary and her friends playing basketball now?
What are Mary and her friends doing now?
Who are playing basketball now?
Mary and her friends are playing basketball now, arent they?

2) Their children are always making noise in the apartment.

Отрицательная форма:
Their children are not always making noise in the apartment.

Вопросы:
Are their children always making noise in the apartment?
Where are their children always making noise?
Their children are always making noise in the apartment, arent they?

3) They make experiments in the laboratory.

Отрицательная форма:
They dont make experiments in the laboratory.

Вопросы:
Do they make experiments in the laboratory?
Who makes experiments in the laboratory?
They make experiments in the laboratory, dont they?