At last we found the exhausted animal lying there, （).
A.sick
B.to be sick
C.in sick
D.to be sickening
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The rain fell so heavily that water （) through the ceiling.
A.faded
B.leaked
C.leaped
D.fell
用兆欧表测量绝缘电阻前要先切断被测设备的电源，并将设备的导电部分与大地接通，进行充分放电，以保证安全。
当主驱动链被过度拉伸或断裂，主驱动链保护装置能使自动扶梯（自动人行道)停止运行。
Can the best student become （)？
A.as best as ever
B.as good as ever
C.better than ever
D.the best as ever
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