—Excuse me, I wonder if you can help．I ______  my ID card．

—But where did you lose it?

       A．have lost             B．lost                     C．had lost               D．lose

 ---Helen, will you be at the party tonight?

---Yes, but I really_________ as I have so much homework to do．

       A．can’t                   B．shouldn’t             C．mustn’t               D．won’t

 Please keep ______ secret that he has decided to give up his present position．

      A．one                 B．this                     C．it                        D．that 

 The trees in that thick forest are so close together that there is hardly any room to move      _______them．

       A．between              B．in                C．among             D．across

 There is a real danger ______ the U．S will not keep its position on the world             economic stage．

       A．where                 B．that                     C．which                 D．one

 With an online course Lynn has over 300, 000 students all over China ________her class  through the Internet．

       A．are attending        B．attended              C．attend                 D．attending

 -----I am leaving for the States tomorrow for a holiday, Caroline!

       -----            ．

       A．All the best!         B．Take your time．C．Well done!            D．That’s OK．

 Little as he is, Tom, like his parents, ______ others who are in need．

       A．are always helping                               B．has always helped

       C．is always helping                             D．have always helped

 ---Will you tell the secret to Tom?  

       ---No way!  ________ I’m asked to．

       A．Unless                 B．When             C．Until                   D．Even though

 Without proper lessons, you could _____ a lot of bad habits when playing the piano．

       A．put up                 B．draw up              C．pick up               D．grow up