This is Everyday Grammar.
I'm Kaveh.
And I'm Lucia.
Tell me, Kaveh, what do these examples have in common?
I know where you can mail the letter.
I wonder if my teacher knows the answer.
What we had for dinner last night was amazing.
Not sure.
One is talking about a letter, then we have a teacher, and I guess you really enjoyed last night's meal.
Think of what grammar they have in common.
