For questions 1-8, read the text below and decide which answer (А, В, C or D) best fits each gap. There is an example at the beginning (0).
Example:
| A between | В apart | C away | D out |
Yellow, orange, red
It is September, warm days are getting few and far 0 _____, you can’t help thinking about winter that is soon going to take 1 . Inevitably, one of the things you can’t 2 but notice is tree leaves turning orange and yellow. So why exactly do they do that?
It is easy to guess that the process is somehow tied to day length. With days getting shorter, trees get less sunshine and eventually the 3 of leaf senescence begins. Simply 4 , it is when trees shed their foliage, as they no longer have much use for it. Keeping the leaves would mean spending 5 amounts of energy for little return. Chlorophyll, key element in photosynthesis, stops replenishing. Instead, what is left of it gets absorbed for nutrients.
Chlorophyll also acts as the green pigment found in leaves. Interestingly, both orange and yellow colours are always present in the leaves, but are 6 by the stronger green pigmentation. Once it disappears, autumn colours manifest themselves. Instead, they focus on preserving the energy and nutrients 7 during the summer months. This 8 to parks and forests turning into a bright ensemble of yellow.
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