I don’t know why you are so concerned — it’s not your problem _____ .   

It wasn’t until he came back _____ he knew the police were looking for him.

I promise _____ else can you find _____ better computer at such a low price.

—We must _____ their permission whatever the cost is.                              

— But I’m afraid they will reject.

He would have been a doctor 20 years ago, but he _____ to be a teacher.

He is my favorite film star. I regard him _____ other stars.

—Do you know where David is?

— Well, he _____ have gone far — his coat is still here.                   

We are not ready to go into production yet. The new machine isn’t fully _____.                                             

I went to the Lincoln Memorial yesterday, _____, not surprisingly, was crowded with visitors from all over the world.

_____ in the regulations that you should not tell other people the password.