The firse lesson__is _no_ _hard _ than__the second lesson.(这个是四空,可以用否定句)
The second lesson is_more_ diffcult__ than__the first lesson.
The firse lesson__is _no_ _hard _ than__the second lesson.(这个是四空,可以用否定句)
The second lesson is_more_ diffcult__ than__the first lesson.