There has to ______ a well-developed system that can give people a warning when a tsunami is ______ the way.
-----Why does Ling Ling look so unhappy? -----she has_____ by her classmates.
----You’re drinking too much.----- Only at home. No one ______ me but you.
I really can’t decide _____ first. A small computer or a big one?
-----Was the class long enough?-----No, _______ enough.
The government of the country is trying to _____ the prices for foods in order to please people.