5. They/suggest/we/protect / environment. VI. Give the correct form of the words. 1. They felt very disappointed because their plan was............. (SUCCEED) 2. The child receives its early ......................at home. (EDUCATE) 3. America is one of the............countries. (DEVELOP) (CHOOSE) (SOLVE) (NOISY) 4. We are faced with a difficult..... 5. They have found out the..…...............about the pollution. 6. I took off my shoes in order not to make any...........