If our product ____ unsatisfactory within 7 days in any way, you can take it back.

. I believe he is a great writer. I am now eagerly waiting his new novel to _______.

Smoking too much will       your health greatly.

—Dick has a bad cough because of smoking.
—Why doesn’t he      ？

—How can I use this washing machine?
—Well, just        the instructions.

The student couldn’t ______ what the teacher was trying to explain.

Please find some books that _____________ these matters.
A. light upon   B. give light upon  
C. throw light upon            D throws light upon

--- How long will it take us to get there?
--- That all ________.

--When will you come home for dinner? I’ll prepare it for you.
--Don’t ________ it. I’ll eat out with my friends.

We didn’t intend to get much from the business the first year, while it ______ so well.