If you had worked hard, you ______ so anxious now.
Washington ______ get very hot and sticky in summertime. July and August are usually the warmest months.
As is known to all language learners, newly learnt words will soon be forgotten unless ______ used in everyday communication.
This approach, ______ more expensive than the basic one, provides us with considerably more usage flexibility.
______ would have been too embarrassed, but he walked right up and asked for her autograph.
German Chancellor Angela Merkel says united Europe could fail if Eurozone(欧元区) ______ over debt problems in Greece, Italy and other weaker economies.