According to the lastest study ,the population of Xuzhou has grown to more than 30 times____it was in 1949. The figure ____to 9.5 million by the end of 2010.
-- What caused the failure of the experiment? -- _____.
A cracked bell can never sound _____.
We might not contact the rescue team. _____, the rescue team itself might get lost.
. There is a tradition of having a family dinner at home on lunar New Year’s Eve. _____, however, the custom has changed.
The farmers were sure that fresh water lay ____ in the earth, so they dug ____ to find it.