My friend asked me if (whether or not) I enjoyed my English class.
The driver asked if (whether or not) everyone would be ready to leave by ten.
Frank asked me if (whether or not) I had given the letters to Mr.Watson.
Howard asked me if (whether or not) I was going to join that organization.
Doris asked if (whether or not) I liked her new summer dress.
Bill asked us if (whether or not) we were able to(could) go to the meeting with him that night.
Mr.Moore asked if (whether or not) I had taken the other two courses yet.
The janitor asked if (whether or not) he had to lock both of the doors.