When I was at the college , I __________ up early to do some body building exercise .
Great changes ________ since we entered E-times. And the computer is widely used throughout the world.
He _____ with a pencil. Now a pen _____ by him.
---Bill is a strong-minded boy.---He sure is. He often says nothing can stop him _____ his dream.
There are so many kinds of mobile phones here. We can’t decide _____.
It took me about two hours to clean the house, My mother _____ what I did.