І. Define the functions of infinitives.
1 To improve soil fertility farmers must apply fertilizers.
2 It is very important to solve this problem.
3 This soil is too poor to produce high yields.
4 The new method to be used in poultry breeding was discussed at the conference.
5 To become a good specialists we have to study well.
6 This area is big enough to cultivate different kinds of vegetables.
7 To work on the farm is necessary for every future agrarians.
8 The aim of the farmers is to improve soil fertility in this area.
9 We are to finish our work in a week.
10 Their task is to build a new cattle barn.
11 Farmers have to apply more fertilizers.
12 To know how a plant grow, you must study botany.
13 The builders work hard in order to finish the construction in time.

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