"that is" or "which is"
12889
When to use “that” and when to use “which”, especially in relative clauses
26718
"is" vs "are" when followed by a number
71690
"Is" vs "has been" in English
15180
Use of "would be" vs. "is"
135926
Either X(s) or Y(s) is/are
92634
Those vs They vs That
90139
'this is' or 'these are'?
25183
How to use "who" vs. "that"
121247
Is it required to use "that" here?
156997
Is it correct to use that/which in the relative clause when it is referring to the place as an object pronoun?
130708
“It” vs. “that”
6257
Are there rules about using "that" to join two clauses?
118578
“all that” vs. “all what”
98289
They are a subject that 'is' or 'are'?
17275
it VS. this Vs. that
4406
What are the grammatical rules determining whether to use "which" or "what"?
66988
"Which" or "what" or ... when referring to a main clause?