I AM USING sql*plus and have come across a dilemma

At the SQL PROPMT after typing a query without a semi-colon at the end, I press "RETURN". The next line is waiting for the next command {i.e. ';' or '/' } to complete the query.

When I press "RETURN", the SQL PROMPT takes me to a new line because I did not finish the query. Is there some way to set the SQL PLUS environment to not go to a new PROMPT, and even after I press "RETURN", to continue with the query.

For exp:

SQL > select sysdate from dual
2
SQL >