Question

---Excuse me, are you waiting for the bus?

---Yes, I am. But the bus is so late. ______, how can I get to the No. 1 Middle School?

1. A.
   In the way
2. B.
   On the way
3. C.
   Out of the way
4. D.
   By the way

Answer 1

D
从整个语境中可以看出，所填部分为一独立成分，是引起所问的问题的插入语，故应用by the way，意思是“顺便问一下”。