IV. Transform the sentences using Conditional II ( If+ Past S, would + VI) 1. If we. . . (plant) more forests, we. . . (save) wild animals. 2. If we. . . (take care) of our planet, we. . . (have,not) so many problems. 3. If we. . . (be) clever and careful, we. . . (live, not) among litter and waste. V. Transform the sentences using Conditional III (If+Past Perf,would+have+V3)1. If people. . . (pollute,not) the planet, many species of animals. . . (disappear. not). 2. If people. . . (invent)different machines, the environmental problems. . . (appear). 3. If countries. . . (spend) more money on research, scientists. . . (solve) some problems.