You have to explain ____ us the reason _____ your being absent from school yesterday.
The government not only ________ the refugees(难民)houses to live in, but also _______ them with food and clothes.
— Can you give me some advice about the design?— I think it should _______ to all ages and social groups.
They are so close friends and their friendship ________ college days.
It was __________ back home after he finished the report.
In dealing with public relations, we should make every effort to prevent the _______ in personality.