Nothing can _____ unless you tell us the truth.

Some expensive drugs can be economical （ ）.

—I’m afraid we must go now if we don’t want to get caught in the traffic jam. —OK. ______.

Not until that day _____ the importance of good manners in a job interview.

He remembered （ ） the zoo by his father when he was little.

It is important that the boy （ ） an adult to take care of him.

I was too （ ） to ask him for help.

We have got to _____ a new way to solve this problem.

I recognized John （ ） he entered the room.

Do you （ ） to know Mr. Cooper’s telephone number and mail address?

Hardly （ ） how I passed the interview.

Education is not an end but a(n)_____to an end.