________ the prices and functions of different types of computers before you make up your mind which to buy.
I got this bicycle for______:My friend gave it to me when she bought a new one.
As he reached _____front door, Jack saw ______strange sight.
I have bought two ball pens ,______ writes well.
——I let my secretary call you several times. Do you know that? ——I _____in a meeting. I’m sorry.
It was only when I reread his poem recently _____ to appreciate its beauty.