----Drugs have done great harm to some people and their families.----Quite true, so we should ________ them.
There is going to _______ a party in our school.
— Mum, I’ m going to Ann’ s party this evening. —_______.
— ______ will you stay in America?— About two months.
Taking ______ exercise and eating ______ food can make you keep thin.
—Would you mind ______ my pet dog while I’m away? —Certainly not.