问题
选择题
| — May I go now? — No. You _____ let the teacher know first. |
[ ] |
| A. need B. must C. can D. may |
答案
答案：B
搜题请搜索小程序“爱下问搜题”
| — May I go now? — No. You _____ let the teacher know first. |
[ ] |
| A. need B. must C. can D. may |
答案：B