---Did you buy           special? ---No ,I bought           .

 I had to buy        of these books because I didn’t know which one was the best.

________ no point in beating around the bush. Let's ________.

The editor-in chief asked me to write an article for him, ______ about AIDS patients in China.

Science is more than a collection of unrelated facts; to be meaningful and valuable, ______ must be arranged to show generalized character.