--Who is the person talking with you just now?
-- Well, if you ______ know, his name is David.
| A．may | B．can | C．must | D．shall |
If our product ____ unsatisfactory within 7 days in any way, you can take it back.
| A．shows | B．proves | C．makes | D．performs |
--Mum, I don’t think I am qualified enough to do this.
--Honey, be confident! You should know it is ____ a man thinks of himself ___ really determines his fate.
| A．that; that | B．how; that | C．what; that | D．how; how |
As long as you’ve paid ____ advance we won’t charge you ____ delivery.
| A．by: for | B．in; with | C．in; for | D．by; with |
I know “time is knowledge”, but I never seem to have enough of ____. So I am working hard to save them.
| A．both | B．either | C．neither | D．none |
I believe he is a great writer. I am now eagerly waiting his new novel to _______.
| A．make out | B．turn out | C．come out | D．go out |