query: When should the word "NOW" be used in a sentence.......?
positive_passages.docid: 155567
positive_passages.text: "It is time now" or "It is now time"?
negative_passages.docid: 121795
negative_passages.text: What is the difference between 'past' and 'present perfect;?
negative_passages.docid: 5498
negative_passages.text: What's the difference between "should" and "could" (in the present tense)?
negative_passages.docid: 78336
negative_passages.text: past simple or present perfect
negative_passages.docid: 97441
negative_passages.text: Present perfect or simple past?
negative_passages.docid: 120295
negative_passages.text: Word to mean "then-current"
negative_passages.docid: 12310
negative_passages.text: When is the present perfect tense used instead of the past tense?
negative_passages.docid: 43333
negative_passages.text: just(recently) + present perfect or simple past
negative_passages.docid: 148841
negative_passages.text: when should we use "being"
negative_passages.docid: 152003
negative_passages.text: When to use "use" and when to use "utilize" in a sentence?
negative_passages.docid: 152400
negative_passages.text: "at which time" vs. "at what time"
negative_passages.docid: 59878
negative_passages.text: When should I use "when" and "while"?
negative_passages.docid: 9402
negative_passages.text: Difference in sentence meaning between present continuous and simple present constructions
negative_passages.docid: 27736
negative_passages.text: Why is the present perfect used in headlines?
negative_passages.docid: 36273
negative_passages.text: Should you say hour or hours in this type of sentence?
negative_passages.docid: 132807
negative_passages.text: What is the historic present tense?
negative_passages.docid: 40372
negative_passages.text: "then" vs "and then"