1. Mary and her friends are playing basketball now. (Мэри и ее друзья сейчас играют в баскетбол)

2. Their children are always making noise in the apartment. (Их дети всегда играют в квартире)

3. They make experiments in the laboratory. (Они проводят эксперименты в лаборатории)

Ответы:

1)That now makes Mary and her friends?2)Whose children always play in the apartment?3)What they desire in a laboratory?