问题
选择题
—Must I return the book this morning?
—No, you . But you return it before supper. [ ]
A. needn't; must
B. mustn't; can
C. mustn't; may
D. can't; need
答案
答案：A
搜题请搜索小程序“爱下问搜题”
—Must I return the book this morning?
—No, you . But you return it before supper. [ ]
A. needn't; must
B. mustn't; can
C. mustn't; may
D. can't; need
答案：A