Some pre-school children go to a day-care center, ___ ___ they learn simple games and songs.
It was not such a good dinner _______ she had promised us.
David is such a good boy _______ all the teachers like him.
______ is mentioned above that the number of the students in senior school is increasing.
______ is mentioned above, the number of the students in senior school is increasing.
_______ is known to everybody that the moon travels round the earth once every month.