IT WAS NOT UNTIL I WAS 15 YEARS OLD THAT I ...HOW TO RIDE A BIKE.A...
17. It was not until I was 15 years old that I ...how to ride a bike.
A. was learned
B. had learned
C. is learned
D. learned
17. It was not until I was 15 years old that I ...how to ride a bike.
A. was learned
B. had learned
C. is learned
D. learned