Debbie intends to take short rests every two hours.rest为什么加s

为什么every student student不加s,every two hours 加s try to take short breaks every couple of hours翻译 It often（take） me two hours （to）do my homework every day适当形式 Let's take a rest.为什么要加take?这个句子的take好像没意思? Two hours are too short for us to finish our homework.为什么用is I have to rest every two minutes改为同义句 two hours' 为什么不是hour's? He spends two hours every day __________[practise]________[s we need to sleep eight or nine hours every night.为什么need后加to 为什么 Take short showers shower 后要加s Her f_ to shanghai will take off in two hours. take of two hours late 为什么不是later