Janet tried very hard. She couldn’t pass the entrance exam to university.
Janet tried very hard. She couldn’t pass the entrance exam to university.
A. Not until Janet tried very hard could she pass the entrance exam to university.
B. Only after Janet couldn’t pass the entrance exam to university did she try very hard.
C. However hard she tried, Janet couldn’t pass the entrance exam to university.
D. Had Janet tried harder, she could have passed the entrance exam to university.