摘要： The house caught fire while they were away. It must have been set on fire by someone. A. a; a B. a; / C. /; a D. /;/
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The house caught ______ fire while they were away. It must have been set ______ on fire by someone.
|
A．a; a |
B．a; / |
C．/; a |
D．/;/ |
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The house caught ______ fire while they were away. It must have been set ______ on fire by someone.
A. a; a B. a; / C. /; a D. /;/
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