______ we have enough evidence (证据), we can't win the case.

  A. Once           B. As long as           C. Unless           D. Since

 My uncle ______ in Beijing for over 10 years. Now he lives in his hometown in Fuzhou.

  A. has worked         B. worked       C. had worked  D. works

 At our factory there are a few machines similar to ______ described in this magazine.

  A. them               B. these            C. those            D. ones

 –I've studied gardening as a hobby. Could I make some suggestions?   

   –______.

  A. You will make it       B. Go right ahead      

C. Don't mention it         D. Take it easy

 Class 11 won the debating contest _______ by the League last week. Congratulations!

  A. to be held               B. held                 C. being held              D. having been held

 ---Mary, I heard there was an explosion in Luzhou. Could you tell me how it _______?

   ---Sorry, I don’t know much about it either.

  A. came on                  B. came about            C. came out         D. came over

 I can’t stand _______ with Jane in the same office. She just refuses _______ talking while she works.

A. working; stopping                              B. to work; stopping

C. working; to stop                                 D. to work; to stop

 The _____ on her face suggests that she didn’t pass the driving test.

A. appearance            B. impression      C. attitude                D. expression

 It took me quite a long time to develop a voice, and _______ I have it, I am not going to be silent.

     A. now that                     B. unless                     C. so that                    D. although

 With Chang'e-3 successfully landing, China becomes the third country in the world that _______ on the moon.

A. lands                    B. has landed      C. landed                    D. was landing