---Helen, we are taking a boat trip to Hainan this weekend. Would you like to go with us?
---That sounds exciting. I’d like to, but I can’t. ______!

1. A.
   Goodbye
2. B.
   Very sorry
3. C.
   Have a nice trip
4. D.
   I envy you

 —Helen, we are taking a boat trip to Hainan this weekend. Would you like to go with us?

—That sounds exciting. I’d like to, but I can’t. _______!

A. Goodbye        B. Very sorry.     C. Have a nice trip   D. I envy you.