写出六种时态的特殊疑问句各一句（一般现在,一般过去,一般将来,现在完成,现在进行,过去将来）

一般现在：Who is the monitor?.一般过去：Where do you find the pen?一般将来：When will he go abroad for further study?现在完成：Where have you been these days?现在进行：What are you doing now?过去将来...