As soon as the teacher enters the classroom, The students stand up. (Negative)
A
No sooner does the teacher enter the classroom than the students stand up.
B
No sooner the teacher enters the classroom than the students stand up.
C
No sooner had the teacher entered the classroom than the students stood up.
D
The students stood up as the teacher entered the classroom.
Correct Answer: No sooner does the teacher enter the classroom than the students stand up.