Directions: This question presents a sentence, all or part of which is underlined. Beneath the sentence you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.

When he returned to the institute the guests left and the secretary was sitting idle.

When he returned to the institute the guests left and the secretary was sitting idle.

When he returned to the institute the guests had left and the secretary had been sitting idle.

When he returned to institute he found that the guests had left and the secretary had been sitting idle.

When he returned to the institute he found the secretary sitting idle, while the guests had left.

When he returned to the institute the guests had left and the secretary was sitting idle.