—Have you finished the book? —No. I've read up to __________ the children discover the secret cave.
Don’t let yourself ______ into buying things you don’t really want.
—Is this the magazine ______ she often writes articles? —Yes, it is.
“This is ______ most useful reference book, ” Mr. Lee told us in ______ class.
20.If you are unable to attend the interview, for __________reason, you should inform us immediately.
19. You should write it in a style which is__________to your subject.