I had meant to meet you at the airport this morning but I was too busy for I_______ a report.

The first decade in the 21st century _______ the rapid rise of China as a world economic power.

.Despite UNICEF’s efforts, dirty water ______ for disease spreading in southern Iraq at the very moment.

Edward, you play so well. But I ________ you played the piano.

—Why? Where is the key to the meeting room? —Dear me! You ______ it in the taxi!