1.It's not common for there to be so much rain in March
->Seldom is there so much rain in March.
2.You won't allowed in until your indentify has been checked
->Only when your indentify has been checked will you be allowed in.
3.Just after the play started there was a power failture.
->Hardly had he play started when there was a power failture.
4.The Prime Minister has hardly ever made a speech as inept as this
->Rarely has the Prime Minister made so inept a speech.
5.We had only just arived home when the police called
->Scarcely had we arived home when the police called.

#NOCOPY

1. It's not common for there to be so much rain in March

-> Seldom is there so much rain in March

2. You won't allowed in until your indentify has been checked

-> Only when your identity has been checked will you be admitted.

3. Just after the play started there was a power failture

-> Hardly had the play started when there was a power failure

4. The Prime Minister has hardly ever made a speech as inept as this

-> Rarely has the Prime Minister made so inept a speech.

5. We had only just arived home when the police called

-> Scarcely had we arived home when the police called.