She looks sad. Could you please tell me ____ that prevents her from being as happy as before?
Children who are not active or ________ diet is high in fat will gain weight quickly.
Spelling Bee is a contest ________ competitors, usually children, are asked to spell as many words as possible.
More public kindergartens ________ preschool kids can spend their funfilled childhood will be built this year.
—Do you have anything to say for yourselves? —Yes, there is one point ________ we must insist on.
He met Rachel at her college graduation ceremony in 2008, ________ he was later to marry.