Directions: The first and last parts of a sentence are numbered 1 and 6. The rest is split into four parts and labelled: P, Q, R and S. These four parts are not given in their proper order. Read the sentence and find out which of the four combinations is correct.

1. An evergreen forest is P. consisting entirely of Q. evergreen trees that R. retain green foliage S. a forest
2. all year round