问题
                    
Could I finish it today or tomorrow ?—Either day is OK.Take your time.You _________ do it as you like.
                            A:can
B:must
C:need
D:might
                        
                        B:must
C:need
D:might
正确答案是:
                        
                        
                        
                    同类题型
                    I ______ some bread and milk______ breakfast this morning.
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Must I finish my composition (作文) right now?-No, you _______.You can hand it in tomorrow.
______ do you go to the old people’s house, Tom? — Once a month. [ ]