The teacher was worried about the boys in her class, for they spent ______ time playing computer games.
Recently our government policymakers are very ______ about the rapidly rising food cost.
Many people agree that______ knowledge of English is a must in______ international trade today.
--The button in the kitchen is out of order. --_______.
– I’m sorry I can’t go to your party tonight. -- ____________? Haven’t we agreed on it?
-- What’s wrong with your pen? -- The ink ___________ come out.