"specify" or "specifies"?
137589
"Require that every lightbulb have/has"
74390
"provide" vs. "provide with"
28704
When should I use "a" vs "an"?
41864
"Though" vs. "although"
137925
"When" or "Where" when refering to scenario?
137647
Differences between "mandatory" and "compulsory"
4406
What are the grammatical rules determining whether to use "which" or "what"?
1387
Are there any simple rules for choosing the definite vs. indefinite (vs. none) article?
1550
Should the noun after "any" be singular or plural?
101892
Alternatives to "and/or"?
99439
Does the definite article provide optional clarification?
93784
When should I use "in" or "on"?
4023
"I let him do it" and "I allow him to do it", why exactly does one require 'to'?
141810
"Whom" or "who" where the referent is both subject and object?
28323
When do I use "can" or "could"?
3283
Proper placement of "exactly"?
66988
"Which" or "what" or ... when referring to a main clause?