Directions: Select the most appropriate option to substitute the underlined segment in the given sentence. If no substitution is required, select ‘No substitution’.
Although the children studied hard, but they could not understand the topic without the help of the teacher.
Although the children studied hard, they
Although the children studied hard, they
Although the children had study hard, but they
Although the children had study hard, but they
Although the children have studied hard, but they
Although the children have studied hard, but they
No substitution
No substitution
Correct Answer: