---- John, you look worried. Anything wrong?---- Well, I _______ a test and I’m waiting for the result.
We haven’t dicussed yet _______ we are going to place our new furniture.
---Do you think it’s a good idea to make friends with your students? ---_____, I do. I think it’s a great idea.
Many beautiful fish are disappearing____ the severe(严重的) pollution.
---- Where does Mr. Black live ? Can you guess? ----- Sorry, I can’t guess ________.
Make sure you’ve got the passports and tickets and _______ before you leave.