问题补充:
Listen! The birdin the tree.
A. sing
B. singing
C. is singing
D. is sing.
答案:
A. sing
B. singing
(答案→)C. is singing
D. is sing.
解析:本题考查时态。根据listen,可知用现在进行时。句意:听!小鸟正在树上唱歌。
时间:2024-04-29 19:25:44
Listen! The birdin the tree.
A. sing
B. singing
C. is singing
D. is sing.
A. sing
B. singing
(答案→)C. is singing
D. is sing.
解析:本题考查时态。根据listen,可知用现在进行时。句意:听!小鸟正在树上唱歌。