Can I come to your office?
How should I pronounce ".............."?
How do you pronounce this word?
Would you pronounce the word "..........."?
How do you spell "............"?
What does USA stand for?
Would you give us an example?
How do you spell that?
Could you explain a little bit more about that?
What do you mean?
What is the difference between "a" and "b"?
I didn't understand today's lesson.
I don't understand the homework.
Just a minute/second/sec.
When is the homework due?
Excuse me, can I talk to you for a minute?
I'm sorry I am late.
Can I go to the restroom?
Can I change seats?