CHLOE didn't start her task.
After CHLOE was prompted by the teacher, she started to study.
On the other hand, CLEO has been starting her task immediately, after coming into the room.
CLEO was concentrating.
CLEO made an appeal to the teacher after her task was finished.
Then, she started next task.
CHLOE tried hard.
CHLOE got done with her task!!