Exercise 2. Put the verbs into the correct form 1. If we
(nun out) of oil, we (need) other kinds of energy
2 Pollution (increase) if we (use) more oil and coal.
3 If pollution (increase), more and more trees (die).
4 The climate (change) if more trees (die).
5 If we ...(try) to control pollution, it (be) very expensive.
6 If we (not control) pollution soon, it (be) too late​

petrovasofia0    2   03.03.2021 18:28    4