30.The novels written by the author sell best, but five years ago no one could have imagined how great a role he________in the literary world.
To enjoy the scenery, Sara would spend long hours on the train ______ travel by air.
The audience ______ when they heard the humorous story.
—I’m sorry.That wasn’t of much help. — Oh, _______ . As a matter of fact,it was most helpful.
— What about ______ lecture you attended yesterday? — To tell the truth, it was too boring.I can't stand ______ lecture like that.
_____the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.