—Do you love teaching, Miss He?—I fell in love with teaching in 2000. I ________ for twelve years by this summer.
He was determined to hold on to this job ___ difficulties he might run into.
_____ on the top of the hill is a monument, dating back to hundreds of years ago.
----Dad, can I go out to play basketball now ? ----- Sorry, you can’t ______you haven’t finished your homework.
---Sorry, sir. I can't answer this question. ---Well, you are supposed ______ this part of history.
I promise _____ else can you find ____ better computer at such a low price.