Work hard ， ________ you will fail the exam .
A. but B. so
C. or D. and
It will take a lot of time, so you must be ______, young man.
A. quiet B. patient
C. creative D. active
--- _____ will you stay there for the show?
--- Until the day after tomorrow.
A. How often B. How soon
C. How far D. How long
_________ unusual experience you had in the USA!
A. What a B. What an
C. What D. How
______ you________ he likes eating dumplings because they are delicious ．
A．Not only ,but also B．Both ,and
C．／ , and D．Neither ,nor
--Can you hear me?
--No, I can’t. Would you please speak .
A. clearly enough B. clear enough
C. enough clearly D. enough clear
