—I see you got a "D" in biology._ ?—Well, I found that subject hard. I think I'II drop it for history.
I don’t understand how he can say that everything is fine _____ it’s so obvious that it’s not.
Please remember to _____ a stamp _____ your envelope before you post it to your friend.
--- Have you heard that Mo Yan was awarded the Nobel Prize in Literature last year?--- _____. He has made a positive contribution to that field.
The boy talked his mother _____ buying him a home computer.
We have been looking at houses, but haven’t found _____ we like yet.