问题
                    
There is no doubt _______ my friend is not satisfied with what they have done.
                            A:that
B:whether
C:if
D:why
                        
                        B:whether
C:if
D:why
正确答案是:
                        
                        
                        
                    同类题型
                    There isn’t ______ in today’s newspaper.
Do you know ______ this i-pad belongs to? —Let me see. Oh, it’s ______.
What did the teacher ________ the students to _______ at the class meeting yesterday?
Let’s ________ the football match(比赛).
The question we should call in a specialist now was raised by the family doctor.