问题
                    
As you can see, the number of cars on our roads __________ rising these days.
                            A:was keeping
B:keep
C:keeps
D:were keeping;
                        
                        B:keep
C:keeps
D:were keeping;
正确答案是:
                         
                        
                        
                    同类题型
                    Mike came here _____ to see you, _____ after he heard that you had retumed from abroad [ ]
Jack, with his friends, ______ going to_____ their English teacher tomorrow.
The exam he paid no attention to _____ him the chance to go to college.[ ]
Recent studies h_____ in low incomefamilies.
It is reported that the police will soonthe case of the two missing children.