— I knocked over my coffee cup. It went right over __________ keyboard.
— You shouldn’t put drinks near __________ computer.
A．the; 不填B．the; a
C．a(chǎn); 不填D．a(chǎn); a
B
第一空為特指，即指被倒了咖啡的這個鍵盤，故用the；第二空表泛指，指任何一臺電腦，故用不定冠詞。
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