Tell me ________ how it came about that you were 20 minutes late for class. You needn’t go into details.
Having a trip abroad is certainly good for the old couple, but it remains ________whether they will enjoy it.
The purpose of new technique is to make life easier,________it more difficult.
We want to have a meeting in your school, but we don't know how many people the school hall can________.
I should ________sorry to you for having forgotten to bring your book.
________person is full of life and is always doing things.