My best friend Stephen swims fastest__________ us three.

Professor James will give up a lecture on the Western culture,but when and where _______ yet

(2013·新课标全国卷Ⅰ)It was a real race ________ time to get the project done.Luckily, we made it

30．He added, “President Obama is going to do_____ he thinks is necessary to get our economy moving again.”

The newly-­discovered star was named ________ a Chinese astronomer ________ honor of his contributions to astronomy