you don't like him is none of my business.
| A．What | B．That | C．Whoever | D．Whether |
I only know it is a ____ distance away from here, but I don’t know ____ the distance exactly is.
A great, how far B great, whatC far, how farD far, what
Unless ____ to speak, you should remain silent at the conference.
A invitedB invitingC being invitedD having invited
I’ve bought an English dictionary which you can ____ if you meet new words.
A get toB come toC refer toD look up
Every possible means_____ been tried，and we find only______ this means can we do it well．
| A．have，in | B．have，by |
| C．has，in | D．has，by |
Because of too many differences between the two sides, a lot of questions are still left ________.
A in the airB on the airC by the airD through the air