What is the population of America — I don’t know. But I know it’s than that of China.

_______ the ability to speak, so heused sign language to communicate with others.

Why do you look unhappy, Lucy— I can’t learn math well I always work hard.

Is there ________________ about the event of the missing Malaysia Airlines plane(马来西亚飞机失踪事件)in today’s newspaper

Excuse me, Sir. Do you have the time— ______.