1. He didn't eat his breakfast as he was getting very late. (Use so)
He was getting so late that he couldn't eat his breakfast.
He was getting so late that he didn't eat his breakfast.
He didn't eat his breakfast so he was getting very late.

2. As soon as the teacher sat, he called the names of the selected students (Begin: No sooner...)
No sooner did the teacher sit than he called the names of the selected students.
No sooner does the teacher sit than he called the names of the selected students.
No sooner did the teacher sit than he calls the names of the selected students.

3. He said to her, "Please come with me to the cafeteria". (Being: He requested her.............)
He request her to come to the cafeteria with him.
He requested to her to come to the cafeteria with him.
He requested her to come with him to the cafeteria.

4. He reached the station on time. He would have lost the train. (Begin: Had.......)
Had he not reached the station on time.he would have lost the train.
Had he reached the station on time, he would have not lost the train.
Had he would have lost the train if not reached on time.

5. Rohit offered prayers in the temple before going abroad. (Begin: Rohit did not...............)
Rohit did not offer prayers in the temple before going abroad.
Rohit did not go to temple to offer prayers before going abroad.
Rohit did not go abroad without offering prayers in the temple

6. The earthquake had caused lot of destruction before the people were rescued. (Begin: The people.................)
The people were rescued after the earthquake had caused lot of destruction.
The people were rescued before the earthquake had caused lot of destruction.
The people were rescued while the earthquake had cavsed lot of destruction.

7. Stay away from the sea shore, you may drown. (Use: lest.................)
Stay away from the sea shore lest you may not drown.
Stay away from the sea shore lest you should drown.
Stay away, from the sea shore lest you may not drown.

8. I would buy a car. I get a good job. (Use If:.......................)
If get a good job, I would buy a car.
If I get a good job then only I would buy a car.
If I would buy a car, get a good job.