两个栈共享一片连续内存空间时 ,为提高内存利用率,咸少溢出机会,应把两个栈的栈底分别设在这片内存空间的两端。
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Mr. Smith, there's been ______ and your luggage is still here.
A. oversight
B. an oversight
C. ove-rsight
D. an over-sight
The room is _____ and there is someone's hair on my bed.
A. smell
B. smelly
C. a smell
D. a smelly
The Housekeeper asks the housemaid to bring _____ and make up the bed again for the guest in room 1218.
A. air-fresher
B. air-freshers
C. air fresher
D. air freshers
I'm very sorry. The room ______ cleaned. I'll contact housekeeping right away.
A. should have been
B. should have
C. should have being
D. should having