As students，we ought to the act of cheating in the exams．（ ）
A．provideB．preferC．prevent
﹣ do you go to see your grandparents？Once or twice a week？
﹣Once a week．（ ）
A．How soonB．How oftenC．How long
David felt because he was not able to get a ticket to the concert．（ ）
A．movedB．excited
C．disappointed
The Blacks usually have milk and bread breakfast．（ ）
A．forB．onC．about
﹣What's your favorite ，Julia？
﹣I like spring best．（ ）
A．movieB．seasonC．weather