Question

--- Boys and girls, your homework must ______tomorrow morning. Remember?
--- Yes, Miss Green.
A. finish              B. be handed in           C. will do

Answer 1

B

试题分析：finish完成，结束；be handed in提交；will do将要做。句意：孩子们，你们的作业明天早晨必须交上来，记住了吗？——是的，格林老师。结合语境可知本句主语是动作对象，故用被动语态，选B。