1. By the 1930s, more than 282 million acres of farmland _______ in America by erosion.
A. damaged B. was damaged C. were damaged D. damages
2. The community house _______ after massive destruction of the earthquake now.
A. was rebuilt B. is being rebuilt C. has rebuilt D. is rebuilt
3. People living around the volcano ______ for one hour.
A. has evacuated B. have evacuated
C. have been evacuated D. has been evacuated
4. The air ________ if people build more factories here.
A. polluted B. will polluted C. will be polluted D. pollute
5. More trees ____ every year to protect the environmental.
A. are planted B. planted C. were planted D. will be planted
1. By the 1930s, more than 282 million acres of farmland _______ in America by erosion.
A. damaged B. was damaged C. were damaged D. damages
2. The community house _______ after massive destruction of the earthquake now.
A. was rebuilt B. is being rebuilt C. has rebuilt D. is rebuilt
3. People living around the volcano ______ for one hour.
A. has evacuated B. have evacuated
C. have been evacuated D. has been evacuated
4. The air ________ if people build more factories here.
A. polluted B. will polluted C. will be polluted D. pollute
5. More trees ____ every year to protect the environmental.
A. are planted B. planted C. were planted D. will be planted