Don t leave the room___the teacher gives you permission.
About this question
This question belongs to "Ôn tập Unit 7: Environmental Protection - Tiếng anh 8 Global Success" on Học Mỗi Ngày. Review the answer, solution, and related items in the same set to study more effectively.
Question detail
Don't leave the room___the teacher gives you permission.
A
when
B
after
C
until
D
while
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