更新1:
Original sentence: Before the lunch break, the groups will be required to make their own lunch with given ingredients, each group designated a different set of food and drinks 呢句睇落怪怪地 其實文法上有冇問題? Peter Chow's answer: The sentence should be like this: Before the lunch break, the groups 1) were required to make their own lunch with given ingredients, each group 2) designed 3) different sets of lunch. My comment: I don't know why Peter has to use past tense. It's a proposal! My suggestion: Before the lunch break, each designated group is required to prepare meals for themselves within the given sets of food and drinks.
