Your mother isn’t a doctor, is she?—-___________. She teaches English in a middle school.
You are never too young _____ doing things.[ ]
Jill goes to school ________ her bike every day.[ ]
. There are so many kinds of tape-recorders on sale that I can’t make up my mind ____to buy.
Kitty, do you know ______?—Sure, about forty minutes.