Water at 100 degrees centigrade.A.boiledB.boilsC.has boiledD.was boiling
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Water _____ at 100 degrees centigrade.
A.boiled
B.boils
C.has boiled
D.was boiling
试题答案
B

Water _____ at 100 degrees centigrade.
A.boiled
B.boils
C.has boiled
D.was boiling
B