问题
                    
I don’t know how to pronounce this word. Canyou help me —Sorry, I don’t know, either. Let’s_________ in my dictionary right now.
                            A: look it up
B: lookup it
C:look them up
D:look up them
                        
                        B: lookup it
C:look them up
D:look up them
正确答案是:
                        