—Whose book is this? —It _____ be Mary’s. Mo Yan is her favorite author. —No, it ____ be hers, she never brings novels to school.
Everyone except Tom and John there when the meeting began.
----Must they clean the classroom now? ----No, they ______.
It’s nice to go a walk a spring evening.
— Is there any ______ on the table? — Yes, only a little.
Jack often _____ music after class.