Put in 'must + infinitive' or 'must + have + past participle': You __________ (practise) a lot before you gave your presentation. It was really good.

You ______must have practised______ (practise) a lot before you gave your presentation. It was really good.

Dịch: Bạn chắc hẳn đã luyện tập rất nhiều trước khi thuyết trình. Nó thực sự tốt.