write this sentance by 4 ways to answer?

Try not to use contracted words (eg. needn't), for a more accurate answer...unless that is what you are specifically studying at the moment, of course!

1. She did not need to do it.

2. She need not have done it.

3. She had no need to do it.

4. She does not need to do it.

She needn't doing it is not a sentence...it does not make sense.

a. She needn't be doing it!

b. She shouldn't have done it!

c. She doesn't have to do it!

d. She must not do it!

* she did not have to do it.

* she needs not to do it.

* she does not have to do it.

* doing it,she did not have too.

:)