Làm và giải thick nha

1. Unless Lan studies hard, she will fail the exam.

2. Unless they get up early, they will miss the train.

3. Unless he learns hard, he will get bad marks.

4. Unless Nam goes to school on time, he will be punished....

5. Unless she is careful, she will drop the cup.

6. Unless they are patient, they won't do that work.

7. If she doesn't try hard, she can't carry that bag.

8. If he doesn't do his exercise, he will not be punished. 

( Unless = If not, mang nghĩa phủ định )