序有误；再排除B项，因为do with是一个动词短语，不可分开；故选C项。

　　答案：C

　　12.-Have you heard that Tom,along with his parents,______to Japan?

　　-Really?No wonder I haven't seen him these days.

　　A.has been B.has gone C.have been D.have gone

　　解析：本题考查主谓一致和短语辨析。分析句子的结构可以看出，此处的主语应该为Tom，所以用单数。从后面一句话所提供的语境"这几天我没有见到他"分析，此处用has gone，表示人不在这里。

　　答案：B

　　13.When and where to go for the on-salary holiday ______ yet.

　　A.are not decided B.have not been decided

　　C.is not being decided D.has not been decided

　　解析：本题考查主谓一致和时态。因主语为一个动词不定式短语，所以应为单数，再根据时间状语yet分析，此处使用现在完成时态。

　　答案：D

　　14.No one in the department but Tom and I ______ that the director is going to resign.

　　A.knows B.know C.have known D.am to know

　　解析：本题考查动词时态和主谓一致。当but连接的成分作主语时，谓语动词应该根据but前的部分确定单复数。

　　答案：A w.w.w.302edu.c.o.m

　　15. Along with the letter was his promise ______ he would visit me this coming Christmas.

　　A.which B.that C.what D.whether

　　解析：本题考查名词性从句的引导词的用法。根据句子的意思分析，此处应该是同位语从句，用来解析promise的意思，所以使用that引导。

　　答案：B

　　16.When they had finished playing,the children were told to ______ all the toys they had taken out.

　　A.put away B.put out C.put on D.put down

　　解析：短语put away的意思为"收拾好；放好"。

答案：A