Пожалуйста помогите составить вопросы(общий , специальный, разделительный, альтернативный) к следующим предложениям:

Lathe is still the most important machine-tool.
He must work hard today.
He is leaving for Moscow next week.
They were in many countries.

Lathe is still the most important machine-tool. (obsh.vopr) Is lathe still the most important machine-tool? (spets vopr) What is still the most important machine-tool?; What kind of machine-tool is lathe? What is lathe? ( tag questions) Lathe is stillthe most important machine-tool, isn't it? (alter.vopr) Is lathe or hatchet still the most important machine-tool? Is lathe still the most important or the most older machine-tool?