1. Millions of people are indifferent to the conservation of forests we will suffer from flash floods. A. since B. because C. as a result D. for 2. Living at the foot of the mountain is hazardous during the rainy season the soil might erode. A. because B. hence C. so D. thus 3. Running water starts to appear on the road of rain. A. therefore B. finally C. then D. due to a heavy downpour 4. If people will replace the trees they have cut with new ones problem of soil erosion can be solved. A. since B. therefore 5. Children have a better tomorrow what we have. A. so that B. thus C. because D. for the we know how to take care of C. consequently D. since 1​