No one should enter the spot without the ___ of the police.
A. permit
B. permission
C. permitting
D. permition
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You'd better put your ____ in the bank.
A. valuables
B. values
C. valuable
D. value
——What are you doing here?——Oh, my teacher asked me to write a passage of about _____ in English.——You can write a _____ passage in English?
A. 600 words; 600-words
B. 600-words; 600-word
C. 600 words; 600-word
D. 600-word; 600-word
Dan caught two ____ birds in the wood last week and they are still ____ in the cage.
A. alive; live
B. live; live
C. live; alive
D. alive; alive
PowerPoint 2013中进行保存文档时,系统默认的文件类型名是( )。
A. ppt
B. pps
C. pptx
D. ppts