--- May we leave the classroom now?
--- No; you _____. You ______ to leave until the bell rings.
A. can’t; are allowed B. mustn’t; aren’t allowed
C. needn’t; are allowed D. needn’t; aren’t allowed
It was a long time ______ he came back home.
A. since B. while C. until D. before
Keep trying _______ the last moment of your life, children!
A. since B. after C. until D. whenever
---Wow, useful and fashionable iphone 6s you have bought!
---Yes, it is ____ great help to me, ____ I must say it also cost me a lot.
A. What, a, but B. What an, the, and
C. What a, a , and D.How, a ,but
. — Are you ______? You spent all your pocket money on the concert ticket of Big Bang!
— You know to go to one of its concerts is my dream.
A. careful B. complete C. cute D. crazy
______ you always think about your future carefully and work hard, I’m sure you will realize your dream some day.
A. So B. Since C. Before D. Although
