I ______ along the road when I saw Peter. So we stopped and had a chat.

______was known to all,William had broken his promise ______ he would give us a rise.

I’m stuck on this problem;you may ask       knows better than I.

    more energy to my study instead of being crazy about Internet games, I would be sitting in a comfortable office now．

 At the beginning of a speech, it is very important to grab the audience’s attention and make them interested in     ________you have to say.