There's umbrella behind the door．It's made of silk．（ ）
A．aB．anC．the
Our monitor is ________.He never shows off before others.（ ）
A．organizedB．modestC．generousD．energetic
—I hear your brother will enter Tsinghua University this summer.
—Exactly，he was a born genius.He was able to read and write ________ the age of 4.（ ）
A．inB．onC．atD．of
My family have ________ breakfast together every day.This helps us start a day well.（ ）
A．不填B．aC．anD．the
﹣﹣﹣I feel really bad about all the mess.
﹣﹣﹣______.I can always clear it up later.（ ）
A．Don't worryB．That sounds great
C．Thanks a lotD．That would be nice
﹣﹣﹣I think art should be about creating beautiful objects.
﹣﹣﹣_______ .That's a very old﹣fashioned way of looking at art.（ ）
A．My pleasureB．It doesn't matter
C．Take it easyD．I don't agree