Connect the following sentences into the complete sentences.

A. If they eat a lot of vegetables,	1. it will take us less time.
B. If the students use their phones in class,	2. he can’t understand the lesson.
C. If you play sports,	3. I will be successful.
D. If he doesn’t listen to his teacher,	4. I won’t be mad at him.
E. If we go by car,	5. they can’t concentrate on their lessons.
F. If she suggests to me some ways,	6. we will have a party in the garden.
G. If Tom doesn’t dash,	7. you will become healthier.
H. If he doesn’t buy a ring for me,	8. he will be hit by a car.
I. If you speak aloud,	9. they will be provided with a lot of vitamins.
K. If the weather is good,	10. the children will be woken up.

We must lock the doors, ________?