query: How do I choose between "can" and "could"?
positive_passages.docid: 5960
positive_passages.text: What is the difference between 'can', 'could', 'may' and 'might'?
negative_passages.docid: 114004
negative_passages.text: Where to use "must/should/might/may/could/shouldn't have "in a sentence?
negative_passages.docid: 86986
negative_passages.text: Using What and Which
negative_passages.docid: 59295
negative_passages.text: "May I have a glass of water" vs. "Can I have a glass of water": which is better, "may I" or "can I", when asking for something?
negative_passages.docid: 37500
negative_passages.text: When should one use "should" and when should one use "must"?
negative_passages.docid: 144020
negative_passages.text: "Cannot help but think" vs. "cannot but think" vs. "cannot help thinking"
negative_passages.docid: 11288
negative_passages.text: Difference between "can" and "may"
negative_passages.docid: 87638
negative_passages.text: Which is better: ... or ...
negative_passages.docid: 65260
negative_passages.text: In how many ways can you select one of the two but not both?
negative_passages.docid: 14431
negative_passages.text: Might / May / Could / Would have been able to
negative_passages.docid: 62469
negative_passages.text: Is it better to say "How do I..." or "How can I..."?
negative_passages.docid: 20222
negative_passages.text: "Can you please" vs. "Could you please"
negative_passages.docid: 5498
negative_passages.text: What's the difference between "should" and "could" (in the present tense)?
negative_passages.docid: 49206
negative_passages.text: How to use would or could in English?
negative_passages.docid: 24644
negative_passages.text: "In" and "on": How can I decide which one to use for vehicles?
negative_passages.docid: 12340
negative_passages.text: Is "can not" unambiguous?
negative_passages.docid: 56608
negative_passages.text: Could possibility or hypothetical