2. Mary doesn't have enough time to do her homework.
3. Lan studies so hard that she can pass the exam.
4. He was such a good performer that the audience cheered.
He performed well enough that the audience cheered.
His performance was so good that the audience cheered.
5. The weather was so terrible that we couldn't go out.
It was such terrible weather that we couldn't go out.
The weather wasn't nice enough for us to go out.
The weather was too terrible to go out.