It is only _______ you understand what your parents do for you _______ you can improve your relationship with your parents.
We are living in an agemany things are done on computer.
Although knocked down by a car, he managed to ______ to his feet.
The sun heats the earth, ___________ is very important to living things.
I will visit you if Father ______ me.
The policeman warned the drive ________ so carelessly.