Look!The students are ______ the teacher carefully.(listen)

问题描述:

Look!The students are ______ the teacher carefully.(listen)

listening
现在进行时
看,学生们正在认真听老师讲
~~~~~~~~~~~~~~~~祝你进步,如对你有帮助,请及时采纳~~~~~~~~~~~~~~~~为什么不加to你说得对,确实应该加to当时只看到这个动词,listen是个不及物动词,后面应该加to