1-(Do - Does- Did ) you usually drink coffee? 2-(Do - Does - Did ) she always studies hard? 3-(Do - Does - Did ) he sometimes drives carefully? 4-(Do- Does - Did ) they never eat iunk food?

In English, the verbs 'do,' 'does,' and 'did' serve as auxiliary verbs and help express the tense of the sentence. For present habits or routines, "do" (used with I, you, we, they) and "does" (used with he, she, it) are perfect choices, while "did" is reserved for past actions. Common mistakes often occur when people forget to conjugate appropriately based on the subject. For instance, "does" should be used with singular subjects like "she," while "do" fits more plural subjects. So, always check your verb forms before hitting 'send' on that text or email!