It is time for us _____ (have) a music leson.Lily can not __________ (is) at school now.

has. are

It is time for us __to have___ (have) a music leson. Lily can not ____be______ (is) at school now.
分析：
1.is 和have都是动词，根据语法动词不定式，动词与动词之间用to连接，to后的动词用原形。
2.can是情态动词，而情态动词后跟的动词应用原形。
PS：此句的意思为：“该是我们去上音乐课的时候了。Lily现在可能不在学校。”
祝你英语进步！

It is time for us (to have) a music leson.
Lily can not (be) at school now.

说明：
1.固定句型“It is time for sb to do sh”：做某事的时间到了，是该做某事的时候了。
2.情态动词can后面要接动词原形，is的原形是be，所以，can后面就用动词原形be。

It is time for us to have a music lesson.
Lily can not be at school now.

It is time for us ___to have__ (have) a music leson.Lily can not _____be_____ (is) at school now.
1）句型：it's time for sb to do sth
2) can 是情态动词,后面需要跟动词原型