Which of the following italicized parts is NOT used as a nominal substitute？
A. Was G. Frank a great editor？ It has been customary to regard him as such.
B. Please send more of your latest samples, if such are still available.
C. No such books are still available.
D. Some reactions to the proposal may be hostile, but there will surely not be many such？
Which of the italicized parts indicates UNCERTAINTY？
A. She can do it herself or ask someone else to do it.
B. The workers were cheerful, or at least they appeared to be cheerful.
C. They"ll stay here only a week or so.
D. Be careful, or you will break your neck.
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