Hospital staff burst into cheers after doctors completed a 20-hour operation to have_______ one- year-old twins at the head.
. Let’s take _____ ten-minute break and have _______ drink of water.
He _______ us that everything would go according to plan, but it turned out a failure.
. His sister left home in 1998, and_______since.
. The weather in Beijing in winter is colder than_______ in Fuzhou.
Although _____ to stop, he kept on working.