21． I ordered coffee while I was waiting for 18:00 film．
A． a; the B． /; a C． a; an D． the; /
22． — Which of the two cameras do you prefer?
— Actually I don’t like ．
A． both of them B． either of them
C． none of them D． neither of them
23 When I was young, I with my grandma for several years, which is unforgettable．
A． lived B． have lived C． was lived D． had lived
