题目内容
选择方框中的情态动词填空。
We ________ cross the road if the traffic is busy.
You ________ listen to your teacher carefully in class.
--Where ________ my brother be?
--He ________ be in the classroom, because I saw him in the library just now.
Students ________ copy others' homework.
--She ________ speak Japanese.
--So ________ I.
--Where ________ my brother be?
