"Do you know what IS IT?" vs "Do you know what IT IS?"
20314
"Do you know where's Linda?" vs "Do you know where Linda is?"
55158
“Have you heard?” vs “Did you hear?” and “Sally broke/has broken her leg”
146182
"How come" vs "Why?"
7614
"Whether or not" vs. "whether"
70992
"What's" in indirect questions
17131
Why is there a distinction between "its" and "it's"?
124553
Is “what’s” a correct short form of “what does”?
10669
Why do we say "is it" when asking a question rather than "it is"?
118102
How does the phrase "Is something the matter?" make sense?
8406
"What more" vs "what else" do you need?
141279
Is there a difference between  and ?
42200
"It is ___ that/who + verb." pleonasm vs. "___ + verb."
99111
Question about probable fixed use of "what do you do?" and "how do you do?"
76551
"What does she look like?" vs. "How does she look like?"
22309
What vs. Which - correct usage in questions
67387
Not really sure vs. really not sure
6938
"I believe it's valid" vs. "I believe it valid"