Both are OK.

Either (one) should work.

both are ok：both 二者、两者都。两者均可。举例：I'm so happy you are both OK!你们两个都没事，我好开心！Yes. Both credit cards and cash are OK.刷卡和现金都可以。You can either reply to all to let us see your vote or you can vote directly to me, both are ok.你可以...

是drastically（ad. 大大地；彻底地；激烈地；大幅度的）不是drastical吧？dramatically 副词 ad.1.戏剧性地;引人注目地 2.戏剧性的，显著的 以上两个词语都是副词，而increase有动词“增长，增加”的意思，所以以上两个副词都是修饰increase 参考资料：百度一下 ...

both 英[bəʊθ] 美[boʊθ]adj. 二者，两者都;pron. 二者;adv. 二者，二者都;[例句]She cried out in fear and flung both arms up to protect her face 她吓得大叫，并且抡起双臂护住了自己的脸。

both of you can go there .

新概念英语中讲的是WHAT MAKE.这个我知道。不矛盾啊。别的地方还讲的是brand呢。所以，不严格要求时。尤其是口语时。二者都可以。没啥差别。当你谈论某个产品的品牌时，你可以用make /牌子或者brand /品牌或者更泛泛的kind /种类来描述。例如：What make of car is that? /那辆轿车是什么牌子的？

两个都英语是Both。用法如下：1、形容词adj.两...（都）,两个...（都）。例句：Both his eyes were seriously burned.他的双眼都严重烧伤了。2、代词pron.两者（都）;两个（都）;双方（都）。例句：Why not buy both?为什么不把两件都买下？3、副词adv.并；又；两者皆。例句：We like ...

can I have both?I want to keep them both.

It went dark 强调过程 It got dark强调结果(状态)两者皆可