Is it standard to use "what" as a form of "which," such as in the sentence: The tour guide let us know what items were permitted to be taken along on the trip. In this instance I prefer "what" ...
Which is your most favourite subject in school ? What is your most favourite subject in school ? Which one is acceptable? If both are acceptable, do they have any difference in meaning?
Much of (what/which) scientists know about dinosaurs has been recently discovered. The phenomenon of (what/which) are known as corporate networks has also attracted attention. And yes, the ...
Possible Duplicate: "Which" vs "what" - what's the difference and when should you use one or the other? Q: What's the rule-of-thumb on "for which" vs. "for what" ...