问题
Listen, who______ in the classroom?
A:sings
B:sing
C:is singing
D:singing
B:sing
C:is singing
D:singing
正确答案是：
同类题型
_____the clothes line, the girl who jumped from the fifth floor didn’t die (死). [ ]
What do you usually have for________ breakfast?A piece of bread and ______ egg.
Lucy is __________ honest girl. And she is __________ student in our class
There _____ anybody in the room. — Why do you say so? — Because the door is locked.