May I speak to Mr. Smith?— He __________. Can I ______ a message?

Our Maths teacher always makes his class _____ . And we’re never tired of his class.

My parents enjoy music.— ______. [ ]

How did the accident happen? —You know, it ________difficult to see the road clearly because it_________.

The bridge in my hometown____ was built 200 years ago was destroyed last month.[ ]