Fix grammaticality in this sentence: Initially, increasing the certain age of retirement would alleviate the burden of aging population.
The 1960s were a decade of economic growth in the United States and the 1960s were a decade of economic growth in the United States.
- The 1960s were a decade of economic growth in the United States and the 1960s was a decade of economic growth in the United States.
- The 1960s were a decade of economic growth in the United States and the 1960
The first sentence is correct.
The second sentence is incorrect. The second sentence is correct.
The third sentence is incorrect.
The third sentence is correct.
The correct answer is the third sentence.
The correct answer is the second sentence.
The correct answer is the first sentence.
The correct answer is the second sentence.
The correct answer is the third sentence.
The correct answer is the second sentence.
The correct answer is the first sentence.
The correct answer