C.
Mom: Hello, Amy.   46    is it going in America?                    
Amy: Hi, Mom. Not bad!
Mom: I can’t hear you.   47    is making noise?                     
Amy: They’re Anna and Elsa.
Mom: Oh,you're busy, right?   48    are you doing now?       
Amy: We’re making a birthday cake for Emily.   
Mom: Wow! You girls are so nice.   49    is it now?               
Amy: Ahh………..It’s late.
Mom: Come on! It’s eleven thirty there.   50    bed right now. Hurry up!               
Amy: OK, Mom. 

noise 噪音
【題組】46.
(A) How
(B) What
(C) Where
(D) Who