问题
                    
Must I work out the problem right now?—Yes, you _______. It’s very serious.
                            A:can
B:must
C:may
D:should
                        
                        B:must
C:may
D:should
正确答案是:
                        
                        
                        
                    同类题型
                    Pleasetellme______.Ihavesomegoodnewsforhim.
He was crossing over to _____ side of the road when I saw him.
A ruler is 2 dollars and a pen is 5 dollars. How much are they? -They are
No one was sure exactly__________ he wanted
John likes walking in the countryside.–_____. They enjoy a good time together every time.