问题
选择题
Someone is knocking at the door, who _____ it be?
It _____ be Danny. He's in hospital for some time. [ ]
A. must, can't
B. can, can't
C. can, mustn't
D. must, mustn't
答案
答案：B
搜题请搜索小程序“爱下问搜题”
Someone is knocking at the door, who _____ it be?
It _____ be Danny. He's in hospital for some time. [ ]
A. must, can't
B. can, can't
C. can, mustn't
D. must, mustn't
答案：B