In "What do/does a baby Range Rover and Altoids have in common?" the subject of the composite verb "do/does have" is "a baby Range Rover and Altoids", which is plural.
I've seen it on TV that a guy asking another man, "have you a map?" If I were him, I would probably say, "do you have a map?" I would like to know what grammatical rules it followed in this case.
What do we do? is an interrogative sentence asking what course of action one should proceed with. The first do is one of those so-called auxiliary verbs in English that are used to form questions. The second do is nothing more than the main verb of the sentence. For example: I've cleaned the room up, done the dishes and the laundry. What do I ...
What we do? vs. What do we do? - English Language Learners Stack Exchange
Do the needful is Indian English, which has been covered on ELU. If you're only interacting with other speakers of Indian English then feel free to use it, but avoid it in any other contexts (most Americans and Brits will think it's quaint/uneducated). In general, the "standard" form is do what [ever] is necessary, but in OP's specific context most likely nothing like that would be used anyway ...
When should you ask a question with "do", and when with "are"? In other words, Are you going to Spain next week? Do you like Chinese food? What is the rule here? We don't sa...
What is the difference between "did you" and "do you" in the following two sentences: Did you want to schedule a meeting? Do you want to schedule a meeting? I can't understand this usage for "do y...